357 sig help please [Archive] - Glock Talk

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dirtyjoe
08-19-2010, 12:34
I have been reloading for only a few months. I started with 45 acp and I am comfortable and confident in my reloads in this caliber and have yet to have any FTF or FTE or any other problems.
Now I am ready to try my hand at 357 sig for my G31. I am using Lee dies in a LCT. Using the info from you guys, I sized in a Lee 40 caliber carbide die first then in the Lee 357 sig die. I set my dies for my dummy rounds for case flare and bullet depth. I made 6 of these and tried to get bullet set back from thumb pressure and even placed nose of bullet on the bench and pressed as hard as I could and the bullets remained snug. All dropped in and out of the barrel smoothly and also chambered from the magazine 3 times without setback.
My question is did I just get lucky on the bullet seating and crimp die??? I bought a 357 sig Lee FCD just as an extra safety measure and ran each dummy in it and could not tell that it was doing any work to the shell casing.
I pulled the bullets from the 6 dummys and there were no signs of shavings or deformity. From what I have described, do you guys think I am ready to start my loads? Or am I missing something. I will be using Hornady 124 gr XTP and start with 11.7 grs of AA9 at 1.140 OAL. Your comments or suggestion are greatly appreciated. Dirtyjoe

fredj338
08-19-2010, 13:39
It sounds like your die setup is perfect & that is 90% of the battle w/ the 357sig. My only suggestion, start about 12.5gr of AA#9 & workup. I prefer mag primers w/ AA#9 but YMMV.

dirtyjoe
08-19-2010, 13:45
Thanks Fred. Going to try to go out tomorrow and I will post results if I have enough fingers left to type with!!!!!

RB98SS
08-19-2010, 13:45
Not everyone that reloads 357sig uses the Lee FCD but I am convinced that it does a fine job of preventing bullet setback. A firm crimp using the collet style FCD works great. IMHO.

BlutoBlutarsky
08-19-2010, 14:04
It sounds like your die setup is perfect & that is 90% of the battle w/ the 357sig. My only suggestion, start about 12.5gr of AA#9 & workup. I prefer mag primers w/ AA#9 but YMMV.

Glad you said that, I was just fixing to ask if anyone had tried mag primers in the 357 sig with #9.

Hydraulicman
08-19-2010, 14:26
i also like my Lee dies for 357 sig. so far i've only used 124 grain XTP's

I size using one shot lube. I flair the bare minimum to seat a bullet.



soon i'll search for a cheaper option.

dirtyjoe
08-19-2010, 14:54
All I have is CCI Small Pistol primers. Will they be o.k. until I can get the magnums?

Bello
08-19-2010, 15:24
those sig dies are not carbide correct? does anyone make carbide sig dies?

dirtyjoe
08-19-2010, 15:51
Lee's are not carbide. I read on GT that Dillon (I think) makes carbide 357 sig dies

fredj338
08-19-2010, 17:07
All I have is CCI Small Pistol primers. Will they be o.k. until I can get the magnums?

Many use std primers w/ AA#9, but I find mags give better ignition of the larger charge of ball powder, adding 50-75fps o/ std.
Yep, at this moment, Dillon is the only maker of carbide dies in the 357sig. I don't understand either as all that is needed is a carbide sizing ring in any steel die. Only the case body/head needs the carbide insert for sizing. That's why the 40 sizer works w/ the 357sig.