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Old February 25, 2000, 01:15 PM   #1
petej88
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If possible, I'd like to use just one powder for all three calibers. I want to be able to hit IPSC major power in 357SIG and .40S&W, but 9mm can stay mellow. I'll have a little advantage using my 5.32" barrels in my G35.

Powders I'm considering:

AA9 (might be OK with heavy .40 bullets)
Blue Dot (strong possibility; easy to find)
Power Pistol (strong possibility)
Vihtavouri N350 (might be a possibility)
Vectan SP2 (although haven't seen 357 loads?)
AA7 (seems to be good moderate load for all 3)
Hodgdon HS6 (might be a possibility)
Hodgdon Universal (weak in 357 SIG, but maybe)
Winchester WSF (might be OK)
Titegroup (too mild I believe)
Unique (too dirty)

I suppose the limiting gauge is that there are not very many powders that push the 357 Sig to major power level, but many that can do a nice mellow 1250 fps. Possibly my 5.32" barrel can squeeze 'em up to around 1298 fps?

Any experimenters out there? Your opinions and experience with any of these powders is welcome.

My experiments are on hold because my new KKM barrel doesn't fit correctly. Darn! Maybe I'll be able to start experimenting within a couple weeks or so when it's sorted out.
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Old February 25, 2000, 02:03 PM   #2
Robert the41MagFan
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Accurate #9 and Blue Dot are too slow burning for that barrel lengths. Never used Vihtavouri powder, but from looking at my manuals, it is a major compromise when you cross the bullet spectrum (weight and diameter). Accurate #7 is going to be too slow for that 9mm, it is only favored in the heavier bullets. Of the powders you listed, Alliant Pistol Powder is the best compromise. Others not listed that may be good options, Accurate #5 and Bulleye. Do not know if there is load data for Bulleye with .357 Sig, that may pose a problem.

A word of warning about Accurate powder. It's ball powder, fine ball powder and not very dispenser friendly. Once you shoot it though, you may find it is worth the hassle.

Robert
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Old February 25, 2000, 02:21 PM   #3
Ricciardelli
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Here's a hint on how to make your loads reach "major"...

Leave them sitting in the sun to get nice and warm (around 140 degrees) and don't remove them until you are ready to do the chrony station...

After you passt the chrony station, who cares?
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Old February 25, 2000, 05:20 PM   #4
Peter M. Eick
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I am surprised at Robert's comments about the AA powders. I find the AA's work great in my RCBS Uniflow. I am slowly weaning myself from being an Alient only shooter to being more of a AA shooter.

Just a different opinion.

------------------
P229 Sport and 357 SIG, Perfection!
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Old February 25, 2000, 05:42 PM   #5
Robert the41MagFan
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Peter,

I'm just too tight and still using a plastic Lee dispenser. Plastic parts and fine ball powder don't mix very well. Do agree with you, AA powder works very well. I use it almost exclusively when seeking maximum power from a cartridge.

Robert
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Old February 25, 2000, 06:27 PM   #6
SVSUPER
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Look into VihtaVouri N340. It has published data for the 9mm and 40 s&w in all bullet wieghts. I emailed them and they sent me the following data.
Bullet 95 gr COL = 1.201 inches

Starting charge
Maximum charge
N340 8.1 grs
9.2 grs
3N37 9.2 grs
10.3 grs
N350 9.3 grs
10.5 grs


Bullet 115 gr COL = 1.201 inches

Starting charge Maximum charge
N340 6.9 grs 8.0 grs
3N37 7.8 grs 8.9 grs
N350 7.7 grs 9.0 grs


Bullet 124 gr COL = 1.201 inches

Starting charge Maximum charge
N340 6.5 grs 7.6 grs
3N37 7.5 grs 8.6 grs
N350 7.5 grs 8.7 grs


Bullet 130 gr COL = 1.201 inches

Starting charge Maximum charge
N340 6.5 grs 7.4 grs
3N37 7.5 grs 8.4 grs
N350 7.3 grs 8.5 grs


As usual, use maximum charges with caution and have good shooting!

Yours,

Janne Pohjoispaa
Nammo Lapua R & D
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Old February 25, 2000, 11:08 PM   #7
SVSUPER
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The data was for 357sig. I used N340 for 40 s&w in a 200 gr bullet for a few years to make ipsc major power. The powder is clean and consistent. Talk to tother shooters about what loads they are using, and do some experimenting on your own.
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Old February 27, 2000, 11:35 AM   #8
WESHOOT2
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AA9: too 'slow'

Blue Dot: too 'dirty'

Power Pistol: ideal, may be best choice!

N350: excellent choice

SP2: heard (rumor) too 'fine' for some measures

AA7: good choice

HS6: not sure for 357SIG

Universal: Hodgdon suggests other powders for 40S&W

WSF: no (just because)

TiteGroup: inappropriate burn rate for these calibers; too 'fast'

Unique: joke, right?

------------------
"All my ammo is factory ammo"

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Old February 28, 2000, 01:18 AM   #9
saands
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I haven't looked for the BullsEye load for the .357 SIG, but the .40S&W loads are a wash with the PowerPistol and the Bullseye is A LOT easier to find ... at least in Northern California. I just went through a pound of the PP (in a USP40C) and was pretty happy with the results, but I decided to try the Bullseye with my next batch, mainly because I didn't want to have to mail order it again and the numbers in the manual are essentially equivalent.
saands
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Old February 28, 2000, 07:51 AM   #10
Robert the41MagFan
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Peter,

I broke down over the weekend, got a RCBS powder dispenser. Even splurged a bit, lot the nice metal base too.

Robert
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Old February 28, 2000, 07:58 AM   #11
Peter M. Eick
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Robert,

I agree with your lee comments and the fine ball powders with the plastic lee dispenser. I used one (plastic dispensor) for at least 5 years and basically wore it out. I also had the problem that it did not work so well with fine powders hence I preety much shot the Aliant products (flake powders that is). Now with the Uniflow I going 180 degrees and trying to shoot mostly ball powders because they work so much better.

------------------
P229 Sport and 357 SIG, Perfection!
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Old February 29, 2000, 05:28 PM   #12
Tree Rat
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Just worked up and extensively tested a .40 S&W load using Universal Clays. The stuff meters great, is clean and I even like the way it pours into the scale weight pan:

6.6 grains Universal
WSP
FED 1X
Rainier 155FP

Ten, 10 shot strings average velocity using a BETA Chrony @ 61 degrees was 1,166 FPS with an SD of 9.89. No pressure signs. - Tree Rat.
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