357 Sig powder conflict

[ZumoKing]

Just received my 357 Sig barrel for my P229 started to load a few hundred rounds then ran into a conflict. Using my Speer #14 manual picked up some Accurate #9 set up my scale for 13.8 grs. (Mid range from low to high). I noticed the case was full after seating a Remington 125 JHP to OAL of 1.140 and it’s a compressed load. The Speer manual does not indicate a compressed load with any amount of AA#9. Went on Accurate website to check the data, Speer starting load for AA#9 and 125 JHP is 13.1 and Accurate MAX load is 13.0 that’s a huge discrepancy. :banghead: So I am not sure about my 13.8 loads. Has anyone loaded 357 Sig using AA #9 and are they compressed loads? Or am I missing something, just don’t want my P229 to go boom.
Thanks,
ZumoKing

 

[ReloaderFred]

That's pretty warm, and as you've found out, you can't get that much in the 357 Sig case and still have room to seat the bullet. For 124/125 gr. bullets, I use 13.0 grains, as Accurate advises. I'm 13,000 rounds into this load and it's worked just fine for me. If your Remington bullets isn't a Golden Sabre, you'll be ok. If it is, it won't work in the 357 Sig.

Hope this helps.

Fred

 

[JimKirk]

That is the Ideal part of using the AA#9 .... it is a compressed load which helps support the bullet so you do not have setback....

The 13.5 grain(Hornady 124 gr XTP) load of #9 is safe in my Glock 31 .... I'm getting right at 1400 fps with that load ...

I would try 13 grains to see ...may be a max in your gun... I have backed my load back down to 13 gr ...

 

[abq87120]

My Lyman's 49th says AA #9 is compressed at 13.0 gr. Shooting this drop work well in my Glock.

 

[ZumoKing]

It's not a Golden Saber. I don't understand how Speer expects you to get 14.6 grs (max load) in a 357 sig case. It would be to the top of the rim. I sent an e-mail to Speer but no reply from them.

 

[ZumoKing]

Thanks that make me feel a little better. I guess I need to get another reloading manual for comparison. I have used Speer for several years with no problem until now. But I just loaded 44 mag and 300 Weatherby mag until now.

 

[ZumoKing]

What is interesting is the Speer manuals test firearm is the Sig P229 that’s the same gun I am using. But I am not going to put a round at max charge of 14.6 in my gun. Accurate shows the max load at 13.0 and what I have been hearing on this site that seems to be a safe load. I may load a little lighter and check the velocity and adjust from there.
Thanks,
ZumoKing