shu
Member
Just an anecdotal observation (unsupported by and research). Posts related to 357sig in Handguns-Autoloaders and in Handloading & Reloading forums seem to have increased in the last month or so.
I have a G-31 and reload for it; don't shoot it much, though. (Currently putzing around with hardcast slow and heavy in 45acp and 45colt.) FWIW, in 357sig Bluedot is my powder of choice. I have a large quantity of 121gr hornaday HAP which I got because the profile seemed ideal for the 357sig; plated bullets scatter above sonic speed in my 9mm's, but the HAP was tolerably priced and did well in 9mm. Unfortunately, I found that seating the 121gr HAP to the specified 1.140 max put the cartridge lip over the cylinder part of the bullet and onto the cone; massive setback problem. Seating beyond 1.170 will not fit in the G31 magazines, although headspace is not a problem. When I have a chance, I'm gonna build some at 1.160 to try. If that crimps in confidently, I may try some PowerPistol.
I have a G-31 and reload for it; don't shoot it much, though. (Currently putzing around with hardcast slow and heavy in 45acp and 45colt.) FWIW, in 357sig Bluedot is my powder of choice. I have a large quantity of 121gr hornaday HAP which I got because the profile seemed ideal for the 357sig; plated bullets scatter above sonic speed in my 9mm's, but the HAP was tolerably priced and did well in 9mm. Unfortunately, I found that seating the 121gr HAP to the specified 1.140 max put the cartridge lip over the cylinder part of the bullet and onto the cone; massive setback problem. Seating beyond 1.170 will not fit in the G31 magazines, although headspace is not a problem. When I have a chance, I'm gonna build some at 1.160 to try. If that crimps in confidently, I may try some PowerPistol.