hearthethunder
Inactive
Okay, any smiths among us?
I have a GP100 that has just been broken in with jacketed rounds (200+) and have worked up some cast loads. Accuacy is not bad but I am wondering if I can do better. I have heard some talk on some other forums about NEW RUGERS and TIGHT CYLINDERS. So after my last cleaning I measured the throats of my cylinders with my dial type calipers. (best that I have) This is a .357 mag and I have shot a fair amount of 38 spl, so I am aware of the build-up that can occur. That cleaned up I tried dropping a 158g SWC round into the end of the cylinder...hmmm kind of tight. Measuring it I got .353"....to .355". Should I see about opening this up a bit? I am wondering if I am sqeezing these bulletts down and not getting all the grab that I can get on the rifling. With a clean barrel I am getting 2" groups at 15 yards using the 158g SWC in 357 mag with 7g of Unique with CCI500 regular primers. Lower loads are kind of opened up. With warmer loads is it possible to sqeeze the lead down and then pusing it hard enough, actually make the seal going down the barrel?
Appreciate you thoughts,
hearthethunder
I have a GP100 that has just been broken in with jacketed rounds (200+) and have worked up some cast loads. Accuacy is not bad but I am wondering if I can do better. I have heard some talk on some other forums about NEW RUGERS and TIGHT CYLINDERS. So after my last cleaning I measured the throats of my cylinders with my dial type calipers. (best that I have) This is a .357 mag and I have shot a fair amount of 38 spl, so I am aware of the build-up that can occur. That cleaned up I tried dropping a 158g SWC round into the end of the cylinder...hmmm kind of tight. Measuring it I got .353"....to .355". Should I see about opening this up a bit? I am wondering if I am sqeezing these bulletts down and not getting all the grab that I can get on the rifling. With a clean barrel I am getting 2" groups at 15 yards using the 158g SWC in 357 mag with 7g of Unique with CCI500 regular primers. Lower loads are kind of opened up. With warmer loads is it possible to sqeeze the lead down and then pusing it hard enough, actually make the seal going down the barrel?
Appreciate you thoughts,
hearthethunder