.357 sig

[hk940]

With the current shortage of reasonably priced components, what would be the slowest powder recommended for the .357 Sig? And or any other powder that would work?

 

[mokin]

That seems to depend on the bullets you're shooting. A quick look through some of my manuals suggest AA No. 9 and Viht. N350. So far I've been happy with HS-6 and 800-X.

 

[Lennyjoe]

Why would you want to slow the Sig down?

 

[Lennyjoe]

 

[vaalpens]

AA#9 is supposed to be good, but I haven't used it yet. The slowest powder I have used so far is Longshot.

 

[FROGO207]

You are looking for a propellant that fills the case so to help prevent setback of the bullet if you can. It depends on the bullet with a 140 grain XTP a max load of 800X is a compressed load. With a 125 jacketed ACC#5 is close to compressed. The actual volume of the charge is listed in the Lee book if you have it.

 

[fxvr5]

A#7, A#9, Blue Dot, Vit N105

 

[mokin]

Why would you want to slow the Sig down?

I've thought about that while I reload that cartridge. I found an old discussion about the .357 SIG and the potential for use in a carbine.

https://www.thehighroad.org/index.php?threads/357-sig-carbines.597210/

I just wonder what someone could do with that cartridge given a little longer barrel and heavier bullets.

 

[hk940]

Why would you want to slow the Sig down?

I did not mean slow down the bullet, I wanted to know what the slowest burn rate powder would work.

 

[Big Wes]

I use 12 grs. AA#9 exclusively with great results, It's a compressed load which prevents bullet set back which was a concern to me when I started reloading 357 sig. It is a high pressure round and I was worried about the pressure spiking due to bullet set back.

 

[kcofohio]

It depends on which burn rate chart you look at. Slowest to fastest(?).
AA#9, Alliant's Blue Dot, IMR Blue Longshot, 800X, AA#7.

I believe AA#9, Blue Dot, and 800X have compressed loads, depending on which bullet is used.