Peterson 243 brass

old roper · October 24, 2018, 08:27 AM

Got some on order, see how small primer work 243

https://www.grafs.com/catalog/product/productId/77098

Reloadron · October 24, 2018, 09:39 AM

Let us know what you find. I have done some minor experimenting with .308 Winchester using large and small primers but without really testing have not found much difference using Lapua brass.

Ron

RC20 · October 24, 2018, 02:54 PM

Unless you shoot in the 0s, 1s or 2s at the most you will not see any difference.

Sadly I am not even down there (consistently, occasional 4 shot brushes and then off to the 1/2 inch races again.)

old roper · October 24, 2018, 03:41 PM

Really, tell you the truth I've never shot in the 0's,1's or 2's but I have shot in the .0's,.1's and .2's @ 5 shot groups. None of those groups shot with factory rifle. Does that pass your test!!!!!!

std7mag · October 25, 2018, 04:06 AM

Being a somewhat local company to me, i want them to do well. (100 miles).

But alas have heard very mixed reviews. Supposedly their market is the match crowd.
However i found it surprising that they don't make any brass for 284. This would have opened them up for 6-284, 6.5-284, 284, 284 Shehane.

I also know more than a couple of bench shooters using 6mm Rem.

hounddawg · October 25, 2018, 08:40 AM

The original reason small primers were used were Palma shooters needed to use some pretty stiff loads to get those .308's out to 1000 yards and the reasoning was the small primer could stand higher pressure without blowing out.

I have a full 100 - 10 Lapua .308 small rifle primer that have over 25+ loadings with no problems. Ten were necked down to .260 just as an experiment. Earlier this year I ordered 200 of the Peterson .260 with the small primer I left 100 virgin and shot the other 100 in 50 round batches. On the 4th reload of one of the batches I experienced a case separation just above the web on one. All 200 cases including the unfired got tossed in the trash.

Now that case separation could have been a fluke or the case could have became damaged but I was not taking any chances and went back to Lapua. I am not slamming Peterson here, I loved the idea of the SRP cases and I was using a load near the top of the chart when that incident occurred. I was also experimenting with 2 different sizing methods at the time and that case could have been getting stretched too much.

Just a warning to keep a close eye on them if you are using stiff loads. I have friends who are using the Peterson as match ammo with no problems

MarkCO · October 25, 2018, 08:59 AM

I tried a small batch of small primer 6.5CM and found that, for my purposes, the juice was not worth the squeeze.

Higher pressures, going for groups under 1/4MOA, then it might matter. But in my 1/2" guns, there was literally no difference.

T. O'Heir · October 25, 2018, 12:07 PM

"If you plan to load above SAAMI max pressure". You shouldn't be reloading. That's marketing BS. The primer size has nothing to do with "fixing" unsafe loads.

old roper · October 25, 2018, 12:49 PM

This is from another site on subject.

http://forum.accurateshooter.com/thr...brass.3942058/

I guess should mention not shooting factory chambered rifle. I have shot little Lapua in 243 and it does better in the 243AI.

I use to shoot 22 Cheetch and formed cases using Rem BR brass with small primer pocket.

hounddawg · October 25, 2018, 06:01 PM

Quote:

"If you plan to load above SAAMI max pressure". You shouldn't be reloading. That's marketing BS. The primer size has nothing to do with "fixing" unsafe loads.

I only shoot out to 800 so my loads are mild to medium and I have had primers back out and leak on cases with less than 10 reloads on them. Mostly on Lake City and Hornady brass.

The point being is that you do not have to exceed or even approach SAAMI maximum to appreciate the small primer pockets.

cjwils · October 25, 2018, 06:16 PM

"If you plan to load above SAAMI max pressure. You shouldn't be reloading."

I am not sure that is always true. For example, the SAAMI specs for 30-06 must be safe in a Springfield of WW1 vintage. If you have 30-06 rifle from a good manufacturer, of recent design and recent construction, I think you could safely exceed SAAMI specs for 30-06, if you work up very carefully. I know some reloaders have done that with no ill affects.

Dufus · October 25, 2018, 06:48 PM

I have seen more modern guns blow up than I have old ones.

Maybe a newer owner gets bolder or the old rifle owner does not have the velocity bug.

cjwils · October 25, 2018, 06:53 PM

This thread started as a discussion about .243. If we were talking only about .243, I would stick with SAAMI specs. That caliber has relatively high pressure specs to begin with.

October 24, 2018, 08:27 AM	#1
old roper Senior Member Join Date: June 11, 2007 Posts: 2,155	Peterson 243 brass Got some on order, see how small primer work 243 https://www.grafs.com/catalog/product/productId/77098 __________________ Semper Fi Vietnam 1965 VFW Life member NRA Life Member

October 24, 2018, 02:54 PM	#3
RC20 Senior Member Join Date: April 10, 2008 Location: Alaska Posts: 7,014	Unless you shoot in the 0s, 1s or 2s at the most you will not see any difference. Sadly I am not even down there (consistently, occasional 4 shot brushes and then off to the 1/2 inch races again.) __________________ Science and Facts are True whether you believe it or not

October 24, 2018, 03:41 PM	#4
old roper Senior Member Join Date: June 11, 2007 Posts: 2,155	Really, tell you the truth I've never shot in the 0's,1's or 2's but I have shot in the .0's,.1's and .2's @ 5 shot groups. None of those groups shot with factory rifle. Does that pass your test!!!!!! __________________ Semper Fi Vietnam 1965 VFW Life member NRA Life Member

October 25, 2018, 04:06 AM	#5
std7mag Senior Member Join Date: June 23, 2013 Location: Central Taxylvania.. Posts: 3,609	Being a somewhat local company to me, i want them to do well. (100 miles). But alas have heard very mixed reviews. Supposedly their market is the match crowd. However i found it surprising that they don't make any brass for 284. This would have opened them up for 6-284, 6.5-284, 284, 284 Shehane. I also know more than a couple of bench shooters using 6mm Rem. __________________ When our own government declares itself as "tyrannical", where does that leave us??!! "Januarary 6th insurrection". Funny, I didn't see a single piece of rope...

October 25, 2018, 08:40 AM	#6
hounddawg Senior Member Join Date: March 1, 2009 Posts: 4,232	The original reason small primers were used were Palma shooters needed to use some pretty stiff loads to get those .308's out to 1000 yards and the reasoning was the small primer could stand higher pressure without blowing out. I have a full 100 - 10 Lapua .308 small rifle primer that have over 25+ loadings with no problems. Ten were necked down to .260 just as an experiment. Earlier this year I ordered 200 of the Peterson .260 with the small primer I left 100 virgin and shot the other 100 in 50 round batches. On the 4th reload of one of the batches I experienced a case separation just above the web on one. All 200 cases including the unfired got tossed in the trash. Now that case separation could have been a fluke or the case could have became damaged but I was not taking any chances and went back to Lapua. I am not slamming Peterson here, I loved the idea of the SRP cases and I was using a load near the top of the chart when that incident occurred. I was also experimenting with 2 different sizing methods at the time and that case could have been getting stretched too much. Just a warning to keep a close eye on them if you are using stiff loads. I have friends who are using the Peterson as match ammo with no problems __________________ “How do I get to the next level?” Well, you get to the next level by being the first one on the range and the last one to leave.” – Jerry Miculek

October 24, 2018, 09:39 AM	#2
Reloadron Senior Member Join Date: June 8, 2016 Location: Cleveland, Ohio Suburbs Posts: 1,750	Let us know what you find. I have done some minor experimenting with .308 Winchester using large and small primers but without really testing have not found much difference using Lapua brass. Ron

October 25, 2018, 08:59 AM	#7
MarkCO Senior Member Join Date: October 21, 1998 Location: Colorado, USA Posts: 4,309	I tried a small batch of small primer 6.5CM and found that, for my purposes, the juice was not worth the squeeze. Higher pressures, going for groups under 1/4MOA, then it might matter. But in my 1/2" guns, there was literally no difference. __________________ Good Shooting, MarkCO www.CarbonArms.us

October 25, 2018, 12:07 PM	#8
T. O'Heir Senior Member Join Date: February 13, 2002 Location: Canada Posts: 12,453	"If you plan to load above SAAMI max pressure". You shouldn't be reloading. That's marketing BS. The primer size has nothing to do with "fixing" unsafe loads. __________________ Spelling and grammar count!

October 25, 2018, 12:49 PM	#9
old roper Senior Member Join Date: June 11, 2007 Posts: 2,155	This is from another site on subject. http://forum.accurateshooter.com/thr...brass.3942058/ I guess should mention not shooting factory chambered rifle. I have shot little Lapua in 243 and it does better in the 243AI. I use to shoot 22 Cheetch and formed cases using Rem BR brass with small primer pocket. __________________ Semper Fi Vietnam 1965 VFW Life member NRA Life Member Last edited by old roper; October 25, 2018 at 01:13 PM.

October 25, 2018, 06:16 PM	#11
cjwils Senior Member Join Date: November 28, 2010 Location: Washington state Posts: 401	"If you plan to load above SAAMI max pressure. You shouldn't be reloading." I am not sure that is always true. For example, the SAAMI specs for 30-06 must be safe in a Springfield of WW1 vintage. If you have 30-06 rifle from a good manufacturer, of recent design and recent construction, I think you could safely exceed SAAMI specs for 30-06, if you work up very carefully. I know some reloaders have done that with no ill affects.

October 25, 2018, 06:48 PM	#12
Dufus Senior Member Join Date: December 10, 2014 Posts: 1,965	I have seen more modern guns blow up than I have old ones. Maybe a newer owner gets bolder or the old rifle owner does not have the velocity bug.

October 25, 2018, 06:53 PM	#13
cjwils Senior Member Join Date: November 28, 2010 Location: Washington state Posts: 401	This thread started as a discussion about .243. If we were talking only about .243, I would stick with SAAMI specs. That caliber has relatively high pressure specs to begin with.