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 Competition Shooting and Reloading
 .357 sig powder choices
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M1A762
Advanced Member

Niger
3215 Posts

Posted - 12/23/2017 :  12:28:58 PM  Show Profile  Reply with Quote
Anyone else here load .357 sig? What is your go to powder? I have read Longshot is a winner, but have not tried it yet.

I use AA#9 and Power Pistol.

AA#9 has the benefit of preventing bullet setback when using a charge of 13gr with a 125gr gold dot. I like that because setback with the .357 sig is bad, you can blow up your barrel - ask me how I know!

Now Power Pistol is a different beast all together in .357sig. If you want magnum power in .357sig this is the powder for you!

I load 8.5gr of Power Pistol over 125gr gold dots. This load has the WOW factor you expect out of a magnum cartridge.

I have a Glock 23 with a Lone Wolf .357sig barrel, it is a very accurate shooter and powerful to boot.

I like having 14 rounds of magnum power .357sig and two 15 round spare magazines for one of my CCW choices.

62fuelie
Member

USA
985 Posts

Posted - 12/23/2017 :  3:38:54 PM  Show Profile  Reply with Quote
Way back when, in the late 90's I got my first .357 Sig, a P-229 that I carried for duty and still use today. My first service level load was OLD Blue Dot, but then they changed the formula and I scrambled around trying quite a few powders. I have settled on Power Pistol as it gives excellent velocity with the 125 grain Sierra/Sig V-Crown. For plinking and practice I use Gil Berry's 125 thick plated flat nose. I use these loads in both my P-229 and P-239 Sigs and I load at Hodgdon's listed max for the 125 grain.

B
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M1A762
Advanced Member

Niger
3215 Posts

Posted - 12/23/2017 :  9:49:23 PM  Show Profile  Reply with Quote
quote:
Originally posted by 62fuelie

Way back when, in the late 90's I got my first .357 Sig, a P-229 that I carried for duty and still use today. My first service level load was OLD Blue Dot, but then they changed the formula and I scrambled around trying quite a few powders. I have settled on Power Pistol as it gives excellent velocity with the 125 grain Sierra/Sig V-Crown. For plinking and practice I use Gil Berry's 125 thick plated flat nose. I use these loads in both my P-229 and P-239 Sigs and I load at Hodgdon's listed max for the 125 grain.



Thanks much, I will have to take a look at those Berry's 125gr plated bullets.

I do load my own powder coated cast bullets for .357sig. I use the Lee .358-125-RF six cavity mold. I size them down to .356 after powder coating. Good accurate bullet that even has a crimp groove that works for .357sig. I have loaded these over 8gr of Power Pistol, but they are hot, very flat primers and some cratering. For practice ammo I prefer to use 12gr AA#9 with these cast bullets.
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charliemeyer007
Advanced Member

USA
5585 Posts

Posted - 12/23/2017 :  11:22:34 PM  Show Profile  Reply with Quote
I was just at the Mesa AZ BassPro earlier today. Reasonable selection of primers and bullets, powder not so much. Might have been 2 #'s of powder that could work in a pistol.
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375H&H
Senior Member

1246 Posts

Posted - 12/26/2017 :  05:51:50 AM  Show Profile  Reply with Quote
8gr's of Unique and 125gr Montana Gold J.H.P. from this guy right here on the auction side , great plinking ammo at a very fair price .

https://www.GunBroker.com/item/722667193

Shooting them out of a Glock 31C .





Better to remain silent and be thought a fool , then open your mouth and remove all doubt
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M1A762
Advanced Member

Niger
3215 Posts

Posted - 12/27/2017 :  02:28:02 AM  Show Profile  Reply with Quote
quote:
Originally posted by 375H&H

8gr's of Unique and 125gr Montana Gold J.H.P. from this guy right here on the auction side , great plinking ammo at a very fair price .

https://www.GunBroker.com/item/722667193

Shooting them out of a Glock 31C .




Thanks!
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Sam06
Advanced Member

12889 Posts

Posted - 12/28/2017 :  12:05:52 PM  Show Profile  Reply with Quote
I like AA#5 with 125gr bullets. 9gr will push them almost 1300 fps in my G32 it great plinking load.

I use AA#5 is almost every pistol cartridge I reload for (38spl-44mag). Its a great powder very consistent and most of all it meters great in my 550B, its my goto powder when loading lead bullets for range fun.

I think AA#9 would be a bit slow but it should work fine. If it was me I think I would bump down to #7 and give that a try. Either will be a great powder and the AA powders are so clean burning and consistent.

I have heard the same thing about Longshot but its hard for me to find it here.


RLTW

Proud white heteronormative cis-male member of the Kyriarchy


Liberalism: The haunting feeling that someone, somewhere, might be having a good time.
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M1A762
Advanced Member

Niger
3215 Posts

Posted - 12/29/2017 :  08:46:38 AM  Show Profile  Reply with Quote
quote:
Originally posted by Sam06

I like AA#5 with 125gr bullets. 9gr will push them almost 1300 fps in my G32 it great plinking load.

I use AA#5 is almost every pistol cartridge I reload for (38spl-44mag). Its a great powder very consistent and most of all it meters great in my 550B, its my goto powder when loading lead bullets for range fun.

I think AA#9 would be a bit slow but it should work fine. If it was me I think I would bump down to #7 and give that a try. Either will be a great powder and the AA powders are so clean burning and consistent.

I have heard the same thing about Longshot but its hard for me to find it here.





Give AA#9 a try. 13gr of AA#9 under a 125gr bullet has a good thump!

I have a pound or two of AA#5, I will have to try it out for .357 sig plinking ammo.

I loaded a few hundred 125gr gold dots over 8.5gr Power Pistol last week, I use these for my carry ammo in my G23 with .357 sig conversion barrel. These really are magnum like in recoil and muzzle blast!

I will have to chrono these loads when the weather allows in a few months, I don't think the wife would understand why I need to check .357sig velocities in the basement!
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