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Old March 3, 2013, 03:08 PM   #51
FrankenMauser
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Quote:
How many reloads do you guys normally get before you need to trim cases?
I haven't trimmed anything, yet. ...and have no plans to do so.
Everything I've measured has been consistent enough that I didn't care.


I haven't lost a case yet. However, I think my most-reloaded box of .327 Fed brass is only on its 4th reload - so it's too soon to call that one.
(I shoot more .32 H&R and .32 S&W Long.)
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Old March 4, 2013, 07:28 PM   #52
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Fired my XTP 100gr, H110 12.6gr, CCI400 reloads out of my GP100. Used a moderate crimp to play it safe with the H110. We had a chronograph but couldn't get it to work for velocities over 1k fps. I ordered my own so I'll be able to start collecting data next time. No sticky extraction, the empties slipped out freely. They burned a little dirtier than 100gr AE's but not too bad. Included a pic of the primer end of the empties.

Also I trimmed the once fired brass back to 1.19" after resizing. Now the brass is shorter after it has been fired. They are all around 1.183". The resizing process must stretch the brass. I didn't use case lube with my carbide re-sizer. Think I'll use lube next time so as to put less stress on the cases. Also no more trimming!
Attached Images
File Type: jpg 327.CCI400.H110-12.6gr.XTP100gr.GP100.jpg (90.0 KB, 22 views)

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Old March 9, 2013, 11:10 PM   #53
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I'm still eating through my supply of .32cal, 71gr FMJ slugs. These are bulk Winchester slugs made specifically for the .32 Auto that I've elected to run through my GP-100, in .327 Federal Mag brass of course. (as always, all my loads run with a CCI-400 small rifle primer)

This most recent range trip, I ran 100 of them loaded with 5.2gr of Hodgdon Universal and loaded to 1.485" COAL. I haven't chrono'd these exact loads (I have a handful set aside for the next big "chrono" day) but I put them on paper at 25 and 50 feet (indoors...) and they certainly work, for a little "POP" and a decent little group on paper. They are awful for taking down steel plates... just NOT a lot of thump in a bullet this light at their moderate little pace.

While I don't have a chrono report at the 5.2gr I last loaded them at...
I do happen to have earlier chrono numbers that I didn't post. (?!)
I loaded some at 5.5 grains Universal and those clocked at 1,333 fps average...
And I did some at 6.0 grains Universal that rang up 1,354 fps average.

Now these were on different days, with a good 15+ degree swing in temps. The "lighter" load was chrono'd on the much -HOTTER- day, so maybe that's why they look so awfully close in velocity, I don't know.

But they ran well on paper and were nice and enjoyable to shoot, so I figured I'd add them here... and bump this thread.
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Old March 26, 2013, 11:52 AM   #54
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Finally made it to the range for my first chrono session. Baselined my GP100 and BlackHawk with some factory 100AE's and then checked
out some H110 and PP-300-MP handloads. The H110 results are pretty much repeats form earlier posts so these will serve as additional
data points for you guys and extra experience for me.

(Altitude: 300', Chrono distance: 10', Temp: 40F, Pressure: 30.06)

Factory Ammo (100AE):
GP100 - (1579, 1614, 1642, 1604, 1544, 1534) 108fps delta, 1586fps avg, 559ft*lbs avg
BlackHawk - (1687, 1660, 1705, 1713, 1709, 1675, 1683, 1716) 56fps delta, 1694fps avg, 637ft*lbs avg

Handloads (COL 1.450", XTP 100gr, CCI400, Fed plain brass):
H110 (12.8gr)
GP100 - (1268, 1283, 1224, 1284, 1304, 1259, 1293) 80fps delta, 1274fps avg, 360ft*lbs avg
BlackHawk - (1349, 1324, 1344, 1384, 1378, 1377, 1380) 60fps delta, 1362fps avg, 412ft*lbs avg

H110 (13.0gr)
GP100 - (1236, 1291, 1285, 1254, 1244) 55fps delta, 1262fps avg, 354ft*lbs avg
BlackHawk - (1324, 1326, 1383, 1384, 1336) 60fps delta, 1350fps avg, 405ft*lbs avg

PP-300-MP (12.8gr)
GP100 - (1194, 1176, 1247, 1158, 1189) 36fps delta, 1193fps avg, 316ft*lbs avg
BlackHawk - (1241, 1265, 1282, 1298, 1311) 70fps delta, 1279fps avg, 364ft*lbs avg

PP-300-MP (13.0gr)
GP100 - (1110, 1135, 1258, 1178, 1178) 68fps delta, 1152fps avg, 295ft*lbs avg
BlackHawk - (1230, 1288, 1279, 1288, 1324) 94fps delta, 1282fps avg, 365ft*lbs avg


I used the Handloader issue 274 Alliant Power Pro 300-MP example 327 loads posted earlier in this thread as my 300-MP load template. These loads
are not officially published therfore use them with CAUTION and at your own RISK. The roll crimp was set similar to factory Federal
AE100 ammo. Not sure if this qualifies as a heavy crimp which is preferred for H110 loads? None of these laods showed signs of over
pressure. The factory 100AE definitely leaves the spent brass looking like they ventured the closest to the gates of hell! The fastest
BlackHawk AE100 round was 1716fps or 654 ft*lbs. The Fastest GP100 round was 1642 or 599 ft*lbs. All of the handloads turned out to be
pretty light and the state of the brass was much more benign.

Speer lists the H110 load range for use with their 100gr Gold Dot Hollow Points using Federal 205 small
rifle primers as:

http://www.speer-bullets.com/pdf/327...File_Final.pdf
http://www.speer-bullets.com/pdf/327...8_DataFile.pdf

100gr GD "H110 13.0 1377 14.0C 1502"

These numbers are for the 3" SP101 which are higher than the results with my 5.5" BlackHawk! The only difference between my 13.0gr H110 loads and the
equivalent Speer load are the CCI400 small rifle primers, XTP 100gr projectile, and perhaps my crimp. I guess as long as the XTP 100gr holds together I
can load beyond the Hodgdon 327 100gr XTP H110 stated max load of 13.2gr? Speer goes to 14gr compressed with the 100gr GD. I'll tread carefully here.

http://data.hodgdon.com/cartridge_load.asp
"100 GR. HDY XTP Hodgdon H110 .312" 1.450" 12.2 1419 31,400PSI 13.2 1525 38,500PSI"

I have no idea how Hodgdon got their H110 results or what barrel length they used?

From the Handloader tests and Sevens results I'll bump up the 300-MP loads and chrono the results. Also I'll enhance the crimp for
both the H110 and 300-MP loads to ensure proper ignition.

Update:
I missed that the Speer H110, 100gr GD loads have a COL of 1.465. The Hodgdon H110, 100gr XTP loads call out a COL of 1.45". I have some Speer 100gr GD's so I'll try these for H110 and then stick to published loads.

Last edited by Low Friction; March 26, 2013 at 08:50 PM.
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Old March 26, 2013, 02:49 PM   #55
FrankenMauser
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Quote:
Factory Ammo (100AE):
GP100 - (1579, 1614, 1642, 1604, 1544, 1534) 108fps delta, 1586fps avg, 559ft*lbs avg
BlackHawk - (1687, 1660, 1705, 1713, 1709, 1675, 1683, 1716) 56fps delta, 1694fps avg, 637ft*lbs avg
That makes me feel a lot better.
I've been wondering if I was the only person seeing 1,700+ fps with the 100 gr AE load in a Blackhawk. Until you posted the above data, I had not seen another report as high as my own chronograph readings (~1,680 to 1,725, depending on temperature).
I've been doubting my data for a while, but I won't any more.

Thanks for the update.
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Old March 26, 2013, 08:54 PM   #56
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I missed that the Speer H110, 100gr GD loads have a COL of 1.465. The Hodgdon H110, 100gr XTP loads call out a COL of 1.45". I have some Speer 100gr GD's so I'll try these for H110 and then stick to published loads.
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Old April 24, 2013, 05:03 PM   #57
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Chrono'ed a few more 100AE rounds. Very similar results as compared to my last test.
Factory Ammo (100AE):
BlackHawk - (1644, 1672, 1700, 1713, 1707, 1729, 1720, 1696)


Here are some more PP300MP loads. A few of the numbers looked suspect and are asterisked.
"Power Pro 300 MP loads"
Handload (COL 1.450", XTP 100gr JHP, CCI400, Fed plain brass):
PP300MP (13.8gr)
Blackhawk - (1381, 1432, 1473, 1484, 1463, 1454)

Handload (COL 1.450", XTP 100gr JHP, CCI400, Fed plain brass):
PP300MP (14.4gr)
Blackhawk - (1418*, 1418*, 1529, 1527, 1504, 1552)

Handload (COL 1.450", XTP 100gr JHP, CCI400, Fed plain brass):
PP300MP (14.5gr)
Blackhawk - (1536, 1523, 1513, 1539, 1543, 1460*, 1539, 1530, 1534, 1460*, 1527, 1552, 1550, 1566, 1525)


This is the Max load per the Hodgdon data for XTP 100gr with H110. They claim 1525 fps with an unknown bbl length. As you can see my results are falling short with the Blackhawk 5.5".
"Hodgdon H110 loads"
Handload (COL 1.450", XTP 100gr JHP, CCI400, Fed plain brass):
H110 (13.2gr)
Blackhawk - (1415, 1433, 1432, 1460, 1447)


These next 3 loads used Speer 100gr JHP (3990) and H110 published load data. These rounds have a little more case volume than published XTP loads. The XTP has a flat tail, the 3990 is concave. Also the COL for the XTP is 0.015" shorter. Speer lists data for both H110 and W296. The Max for H110 is 14.0Cgr. The Max for W296 is 14.5Cgr. My Max load used is 14.2gr of H110.
Handload (COL 1.465", Speer 3990 100gr JHP, CCI400, Fed plain brass):
H110 (13.4gr)
Blackhawk - (1374, 1349, 1394, 1438, 1397, 1410)

Handload (COL 1.465", Speer 3990 100gr JHP, CCI400, Fed plain brass:
H110 (13.8gr)
Blackhawk - (1416*, 1501, 1510, 1504, 1491)

Handload (COL 1.465", Speer 3990 100gr JHP, CCI400, Fed plain brass:
H110 (14.2gr)
Blackhawk - (1422*, 1539, 1406*, 1536, 1536, 1543, 1539, 1483, 1503, 1541, 1450, 1561, 1550)

Note: (Altitude: 300', Chrono distance: 10', Temp: 52F, Pressure: 30.25)

All of the above loads extracted easily. The cases and primers looked normal. I used my ChargeMaster to accurately measure my charges. I seem to have some abnormally slow rounds occasionally. Not sure if this is my Chrono or the way I'm using it. Anyway there's enough data there to get a feel for the performance.

The PP300MP resulted in the largest boom and the most flame of the handloads. The H110 had a little smaller fireball. Does this mean that H110 is faster burning than PP300MP? I used a strong crimp for all of these loads. I'm not really seeing any advantage of PP300MP over H110. The factory 100AE is the cleanest burning of the three. Let me know what you guys think.
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Old May 29, 2013, 11:58 AM   #58
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Low Friction--

"I have no idea how Hodgdon gets their H110 results--what barrel length..."

When you are on the web page of Hodgdon reloading data, click the print button. Then an inset will pop up showing the barrel length and others stuff:

327 Federal Magnum

Cartridge Information

Case: Federal Barrel Length: 5"
Twist: 1:16" Trim Length: 1.200"
Primer: Federal 200
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Old May 29, 2013, 12:37 PM   #59
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Excellent, thanks.

I'm not getting anywhere near their results with my 5.5" Blackhawk. My BH fires 100gr AE factory ammo at over 1700 fps so it's not my revo.
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Old May 31, 2013, 01:56 PM   #60
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10" TC

Hi TCRon if you're out there, I just received my 10" barrel from MGM. Waiting for cast bullets to arrive to reload for my TC. Curious if you were able to test loads for your 327 barrel. I'm going to start with Accurate #7 load data. I don't have equipment to test my loads so I try and listen to other more experienced hand loaders. Thanks.
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Old June 3, 2013, 09:26 PM   #61
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Finally dusted off the chrono and got some of these .327 loads clocked.
I can't say I'm thrilled with much of what I did with Power Pro 300-MP, but the AA#9 loads fared better, and my 115gr RN-FP cast bullet (Penn Bullets) did pretty well.

.327 Federal Magnum, 85gr XTP over 13.0gr AA#9, 1.460" COAL, CCI-400 SR
low-1,484 fps, high-1,568 fps, 1,512 fps average

.327 Federal Magnum, 85gr XTP over 14.2gr AA#9, 1.460" COAL, CCI-400 SR
low-1,522 fps, high-1,671 fps, 1,573 fps average

Extreme spread was not small, but these are speedy. I'll likely make more of these and give them another chrono twirl one day. The AA#9 has a nice and different scent to it also!


.327 Federal Magnum, 85gr XTP over 13.3gr Power Pro 300-MP, 1.460" COAL, CCI-400 SR
low-1,054 fps, high-1,264 fps, 1,153 fps average

.327 Federal Magnum, 85gr XTP over 14.7gr Power Pro 300-MP, 1.460" COAL, CCI-400 SR
low-1,099 fps, high-1,264 fps, 1,204 fps average

I'll go out on a limb here and suggest that this powder is not at it's best with light bullets in .327 Federal Magnum.


.327 Federal Magnum, 100gr XTP over 12.0gr AA#9, 1.460" COAL, CCI-400 SR
low-1,343 fps, high-1,408 fps, 1,366 fps average

.327 Federal Magnum, 100gr XTP over 13.0gr AA#9, 1.460" COAL, CCI-400 SR
low-1,404 fps, high-1,476 fps, 1,443 fps average

Pretty speedy and fairly consistent also. What's not to like?


.327 Federal Magnum, 100gr XTP over 13.3gr Power Pro 300-MP, 1.460" COAL, CCI-400 SR
low-1,163 fps, high-1,241 fps, 1,209 fps average

.327 Federal Magnum, 100gr XTP over 14.3gr Power Pro 300-MP, 1.460" COAL, CCI-400 SR
low-1,281 fps, high-1,362 fps, 1,316 fps average

Underwhelming from the Power Pro 300-MP loads. I'd love to keep tinkering with this powder, and I'm not saying that I won't--but it's feeling kind of lonely since Alliant offers like zilch and there are little to NO published source for loads with this powder in .327 Federal. But hey, Low Friction is doing his work, I've got a little here to look at, maybe some others join in and we can all be THE source for .327 Federal load data?!



Last two are using the 115gr cast lead (no gas check) Penn Bullet, it's a RN-FP with a dark red lube. The AA#9 load just murders steel plates!

.327 Federal Magnum, 115gr Penn LRN-FP over 12.0gr AA#9, 1.469" COAL, CCI-400 SR
low-1,442 fps, high-1,489 fps, 1,463 fps average

If you enjoy tainted mathematics, that's 546 ft/lbs of energy from a .327 Federal right there.


.327 Federal Magnum, 115gr Penn LRN-FP over 12.5gr Power Pro 300-MP, 1.469" COAL, CCI-400 SR
low-1,255 fps, high-1,345 fps, 1,307 fps average

Again, falls behind the AA#9 in any way you'd wish to measure it.
Meh, maybe I go further with this. Ya can't go past published max...if there exists no published max, right?!

==========----------------> PLEASE READ THIS!
Most of the loads in this post are either at published MAXIMUM or they are unpublished loads that have never been tested by anyone with real equipment. Please be extremely careful and do -NOT- take anything you've seen here as proof that you should make these loads. Instead, REDUCE them, 15% is a good idea, and work toward what you've seen.

All of these were safe and fun in my Ruger GP-100 with it's 4.2-inch Mag-Na-Ported barrel and nothing I've shared here gave any evidence of excessive pressure.

Niether myself nor TFL Forums will be held liable if you trip down the basement stairs in a rush to make a slew of .327 Federal powdered by Accurate #9.
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Old July 2, 2013, 04:46 PM   #62
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I'm trying to work up a light plinking load for the 327 using Unique powder and a 76 grn lead RN bullet from Hunter Supply. All I could find was a load on the web using a 77 grn lead RN bullet and 4.5 grns of Unique, reduce 10% for a starting load. I loaded 5 of these at 4.1 grns. Accuracy was good extraction was good (they just fell out), but the primer seemed awfully flat. Brass was sooty like there wasn't enough pressure to seal the brass to the chamber. Can low pressure cause flattened brass? I liked this load. Recoil was nonexistent. Like maybe a 22. I'm going to try to put a picture on here of the brass.

OK it's official I'm too computer ignorant to post a picture - Use your imagination as to what the brass looks like
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Old July 3, 2013, 07:30 AM   #63
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photo.jpg

Here is the picture of the brass. What do ya think
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Old July 3, 2013, 02:53 PM   #64
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I do not take a lot of stock in "reading primers." Let me clarify that --
I think "primer reading" is a very inexact science, but it's most useful when comparing very controlled, like examples. Here's what I mean:

To make a load like the one you did, and look at the primer... unless it's smeared, pierced, flowing or blown, I think we have precious little evidence from which to draw any concrete solutions.

However: if you made up FOUR different charge weights, across a (fairly) large spectrum and you were able to compare the lightest ones to the heaviest ones and you could see how the primer appearance changed as you pushed toward the hotter load, NOW you've got something concrete and worthwhile.

Also, you didn't say what primer you used. FWIW, this cartridge, due to it's peak operating pressure, demands and is properly specified for use with a small RIFLE primer, and never a small pistol. Simply, a small pistol primer is dangerous for this cartridge when it's run at it's full, maximum designed pressure.

If your loads were using a small pistol, non-mag primer, and a known soft one at that (say, Federal) than we'd see what appears to be "PRESSURE!" in attempting to "read" those primers.

I don't think that the load you concocted is anything approaching extreme or unsafe. However, I'm not a professional, I'm just a guy who plays around a lot with .327 Federal. My reasoning? I run a lot of a load that's a hard cast 115gr lead flat point at 5.0 grains of Hodgdon Universal, and I'm quite comfortable with the "safety" of my load. I love the performance.

Universal & Unique are obviously not the same powder, but they are similar powders. So I'm running a similar powder...at a heavier charge with a MUCH heavier bullet.

Of course, my load wasn't drawn from published data. This is the risk we take when working with cartridges that are far from mainstream/popular. I don't know what a lab would return with when testing my load, so I can't sit here and profess that mine is "safe" and then so also might yours be.

But my opinion is that you aren't running anything extreme.
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Old July 3, 2013, 09:54 PM   #65
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Sevens, that was in fact a Federal SP primer. I hate those primers. I figured to use them in this load because I was sure it would be a low pressure load. I was just curious if a low pressure load could flatten primers. Thinking maybe brass not expanding enough to seal in chamber therefore letting brass travel back harder flattening the primer. I use WSP primers when loading higher pressure loads. I load 6 grains of Unique with a 85 grn XTP with no signs of pressure. That's a pretty accurate, low recoil load. That's what is in the 327 when it's pulling CCW duty.
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Old July 10, 2013, 05:20 PM   #66
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My handgun caliber of choice has been .357mag for most of 6 decades.
When I was young, the .32's were not only 'cheesy', but the guns were
not impressive [to me], maybe because of the cowboys on TV.
Somewhere in my mind, whatever came along 'new' in a .32 was like
water running off a ducks back. Hmmmph....so what !!!
A sorta neat story but long and I will not bore anyone with my wake-up call,
but I overheard a saleslady trying to sell my wife a .327 fedmag SP-101 and I must say, I did eavesdrop for a few. I sneaked off to the other counter and asked if they had any .327 ammo.....and was first surprised at the price BUT....
once I held a round in my hand, best description I can offer close to reality, it was like some 'Indian Trinket' if that makes any sense. I couldn't get home fast enough to research this little jewel, which also opened my hard-headed eyes to
what I had missed out on the .32H&R............for 30 years. Not to mention the fine guns chambered for it ...which were no longer available in production.
I believe everything happens for a reason, and even though I was sad I missed out on the John Wayne Rugers, etc, I was excited to find the .327's
in some nice prominent arms. Saved every penny I could [for gun purchase] and drove the MRS. crazy with my new obsession.....but ended up with a very sweet array of beautiful .327 revolvers. Still had a big problem !!!!!!
Three choices in commercial ammo.....minimum $1/round.....not my forte.
I load most everything I shoot but I couldn't find the components I needed, mainly brass....but load data as well. Federal wasn't giving up any info, nor was American Eagle. I even bought some AE and 'pulled' it...the powder looked like crushed ball powder, or something.
My only feasible choice at the time was just load .32 H&R's.
This was several years ago and things have moved along since, even at a turtle's pace, but even as mfg's drop the chambering for the .327's there are you bunch of crazies that understand this sweet round and are diligent in creating hands-on data. You guys are the only reason I actually registered on ANOTHER [additional] forum, like 10+ ain't enough already to absorb my time.
Most of my components are related to the .32 H&R because of lack of data before this crap situation we are in now, like primers [SPP]. I didn't know I needed SRP and walked away from 1000's just looking for SPP. I'm good on my components, but limited to how hot I choose to go, but I have never been so excited [old/3rd childhood...maybe] as the last few years with these .32's
Just for the record, I use/love W231 although I don't see any of you doing so.
Anyway, thanks for the data you guys have graciously offered. Best I have seen yet. Please don't stop.
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Old July 11, 2013, 04:42 AM   #67
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Welcome, and enjoy.

I couldn't recommend a -fast- powder like W231 for this round, unless you were loading some of the 71gr FMJ pills designed for the .32 Auto. (which I do... simply because I have a couple thousand of them) I don't run them with W231 as I don't keep that powder, but I've run them with Bullseye and Titegroup. The key when running these bullets is to keep a handle on the speed. As they were never designed to run crazy-high velocities that the .327 Federal is capable of, they could damage the forcing cone of any revolver you attempt to hotrod them in. I tend to keep my 71's at 1,300fps or under. Even that is probably faster than I'll ever need them to go. Those little slugs don't do anything for me other than plink. Even running them fast won't knock down steel plates all too well.

For running the 85 and 100gr XTPs, or the Sierra 90gr JHP's, you'll make far better use of a slower "magnum" kind of powder. Alliant 2400 has done well for me and AA#9 has turned in some terrific numbers. I've done poorly with the Power Pro 300MP thus far...

And I like a nice medium powder for the 115gr cast lead slugs -- Universal works for me, but I'm quite sure that Unique would do a fine job.
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Old July 11, 2013, 10:25 AM   #68
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Thanks, Sevens
I have a lot of W231 because it's so versatile for me and what I shoot,
or what I used to shoot lots of.
Now it's basically .38 and .32 calibers and since things went so crazy I haven't
seen much need to chase all over looking to replace some of the other powders I formerly used.
I have had wonderful results in the .32 H&R with 231 and am currently achieving satisfactory results in the .327 with some medium loads.
I only have six different projectiles to work with and mainly SPP and SPM but
around 4.6gr of 231 seems to be working really well. Berrys plated HBWC, turned either way, and seated to COL of 1.333" [not flush] is working very well in the 2" and 3" snubs, 4" GP and the 5.5" BH.
I don't have much chance to chrono now, they annexed me to the city limits which rendered my range inoperable at home, and the indoor I shoot at has little short shelves and I don't think anyone would appreciate me shooting from 10 feet behind the booth.......
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Old December 27, 2013, 08:39 PM   #69
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327 Magnum 150 Grain Cast Bullet

CAUTION: The following post includes loading data that is not currently published in any reloading manual. USE AT YOUR OWN RISK. Neither the writer, The Firing Line, nor the staff of TFL assume any liability for any damage or injury resulting from use of this information.

Because Ruger used a full size Blackhawk frame for the 327 magnum, it got me to thinking that I could go a lot heavier with the bullet and it would still fit in the cylinder. I have a RCBS .30 caliber, 150 grain Flat Point bullet mold that was designed for 30/30s and the like. The bullets come out about 0.311" but the gas check is approx 0.318". I run these through a 0.312" sizer which gets a good seal on the bullet due to the gas check size.

When I was getting the velocity readings, I was shooting @ 25 yards into a target. The entire 10 shot group measured 3 1/8" with 8 shots coming right in at 1.5". These definitely shoot better than the federal factory stuff I tried so far. The pressure is still below factory ammo levels but due to the temp being in the high 20s and the accuracy being good, I am not going to increase powder until the weather warms. Some fired cases are shown below with the factory (silver primers) on the left and this load (bronze primers) on the right.

Firearm - Ruger Blackhawk 327 magnum, 5.5" barrel
Bullet - RCBS cast 150 FP sized to 0.312", 153 grains as cast, Hornady gas check
Case - Federal
Primer - Wolf Small Rifle
Powder - 2400
Weight - 9.0 grains
OAL - 1.662"
Velocity - 1126 (average of 10 shots)
Sectional Density - .225
Energy - 431 ft/lbs

This should be a very deep penetrating load due to the high sectional density. It rates higher than typical 9mm, 357 mag, 40 S&W, or 45 Auto. It would be about the same as the Buffalo Bore 325 grain 45 Colt load. My first attempt was seating the bullets deeper to an OAL of about 1.577". They were as accurate but the pressure was higher. I was getting the same pressure with 8.2 grains of 2400 and 1040 FPS. These loads were fine in my gun but that is no guarantee that they will perform the same in another revolver. If I was to shoot them in another firearm, I would start 10-15% lower than the charges listed.



IMPORTANT: Cast bullets can vary a great deal in pressure and it is not just because of weight. If you substitute a different bullet, even if it is rated at 150 grains, VERY likely if will have a different max pressure. Bearing surface, metal hardness, etc all effect pressure. Do not expect this data to translate to any other bullet.

Last edited by saleen322; December 27, 2013 at 09:12 PM. Reason: Reminder about different bullets
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