drannor
Member
I'm still in the process of "debugging" my .45ACP target loads and hoped folks might provide some insight into issues I had yesterday at the range.
I've already shot these loads successfully through my S&W 625 as a first run test. So I moved on to the Kimber Gold Match to test things in an autoloader. The first 4 - 5 rounds would chamber and fire fine, and then inevitably later rounds with fail to feed, with the bullet hanging up on the feed ramp. To remedy I'd lock the slide back, drop the mag, extract jammed round, put jammed round back in mag, then drop slide.
In manually cycling rounds thru the pistol I notcied that some amount of bullet setback is occuring after they are chambered. I need to measure this, but didn't have my dial at the range. It occurred to me if the crimp is insufficient the bullets may be wiggling out in the magazine as I shoot, resulting in longer OAL and jamming.
Some ideas:
I need a heavier crimp?
I need to decrease OAL?
I need to try a different pistol? (CZ 97, Kimber Compact, SIG GSR?)
Try different magazines?
Thoughts? Recommendations? Is there a good way to measure crimp? I've been judging against factory loaded ammo for comparison.
I'm headed back out to the range tonight with my dial calipers and a couple different .45s. Hopefully I will have more data to report.
Background:
Ranier 200gr SWC TMJ over 4.8grs Bullseye, Win case, CCI primers, 1.265 OAL
Reloaded in Dillon 550B with RCBS dies. (Seat/Crimp with same die)
I've already shot these loads successfully through my S&W 625 as a first run test. So I moved on to the Kimber Gold Match to test things in an autoloader. The first 4 - 5 rounds would chamber and fire fine, and then inevitably later rounds with fail to feed, with the bullet hanging up on the feed ramp. To remedy I'd lock the slide back, drop the mag, extract jammed round, put jammed round back in mag, then drop slide.
In manually cycling rounds thru the pistol I notcied that some amount of bullet setback is occuring after they are chambered. I need to measure this, but didn't have my dial at the range. It occurred to me if the crimp is insufficient the bullets may be wiggling out in the magazine as I shoot, resulting in longer OAL and jamming.
Some ideas:
I need a heavier crimp?
I need to decrease OAL?
I need to try a different pistol? (CZ 97, Kimber Compact, SIG GSR?)
Try different magazines?
Thoughts? Recommendations? Is there a good way to measure crimp? I've been judging against factory loaded ammo for comparison.
I'm headed back out to the range tonight with my dial calipers and a couple different .45s. Hopefully I will have more data to report.
Background:
Ranier 200gr SWC TMJ over 4.8grs Bullseye, Win case, CCI primers, 1.265 OAL
Reloaded in Dillon 550B with RCBS dies. (Seat/Crimp with same die)