andyo5
Single-Sixer
I took my new gun out to the range today for some bench resting of pet loads that my six inch GP100 and S&W 686 both like. This Blackhawk has a 4 5/8" barrel. The gun is not modified in any way yet. Before I took it shooting, I found that both .357" JHP bullets and .358" lead bullets will stick in the cylinder throats and cannot be pushed out with moderate pressure. So all throats are undersized.
My problems were:
1. Middling accuracy with known good loads. Loads use 158g JHP and 158g LSWC bullets over 10.5g of Blue Dot.
2. The base pin would not stay put. After every shot, I could not cock the hammer for the next shot until I pushed the base pin back in. It seems that under recoil, the base pin is able to push past the retaining latch and move outwards far enough to disable the action. If I try to make this happen by just pulling on the base pin by hand, it will not move far enough to replicate the failure. However, the base pin latch rides in a radiused groove on the base pin, so there is some back and forth slop.
Questions are:
Do you think it would help to to throat the cylinder chambers? I do have the correct reamer to do so.
Do you think my base pin latch needs a stronger spring, or does it sound like a different issue?
I'm reluctant to send the gun back to the factory if I can cure this myself.
Thanks!
My problems were:
1. Middling accuracy with known good loads. Loads use 158g JHP and 158g LSWC bullets over 10.5g of Blue Dot.
2. The base pin would not stay put. After every shot, I could not cock the hammer for the next shot until I pushed the base pin back in. It seems that under recoil, the base pin is able to push past the retaining latch and move outwards far enough to disable the action. If I try to make this happen by just pulling on the base pin by hand, it will not move far enough to replicate the failure. However, the base pin latch rides in a radiused groove on the base pin, so there is some back and forth slop.
Questions are:
Do you think it would help to to throat the cylinder chambers? I do have the correct reamer to do so.
Do you think my base pin latch needs a stronger spring, or does it sound like a different issue?
I'm reluctant to send the gun back to the factory if I can cure this myself.
Thanks!