357 sig load

[N1YDP]

i cast some tc bullets that weight 131gr. i cant find any data close to that weight.how do you figure a load for weight of your bullet.i am useing aa#7 powder.

[Bwana]

You will ok if you use 125gr load data and reduce by 10%. Since you are using a cast boolit you will not be trying to operate at the upper pressure levels and it will be fine. Here is a very useful site for anyone loading the 357 Sig: http://www.handguninfo.com/Archive/www.Pete-357.com/#Top

[N1YDP]

i have a g20 with a lone wolf 357 sig conv. barrel.i made up some dummy rounds to try cast 125gr rn tl bullets. the oal is 1.2170. it fits good in the mag and i cycled it 5 times and it dont have any setback. i will load some rounds with 8.9grs. of aa#7 and try it.
here is i pic of the dummy round

[N1YDP]

shot some rounds today.8.6gr aa#7 125gr cast lead rn oal 1.22. sized to .356 shot well. unsized would not lock all the way.going to try 8.9gr.

[Bwana]

By the way, Lone Wolf aftermarket bbls are notorious for being short throated. I have the G20 10mm, 40, 357 bbls, and a 9mm conversion bbl for my 23 and 32. The 9mm bbl is throated properly. In the rest the rifling starts maybe a 16th of an inch from the case mouth. Not hard to deal with in the 10mm and 40 and since I shoot jacketed through the 357 sig bbl it hasn't been an issue.