10-29-2021, 11:00 PM
My issue has been getting rounds caught up with the rifle on a bag on a barricade with the mag pressed pretty hard against my bag, which ends up tilting the rounds down slightly and then they get caught up on the barrel extension feeding.
It's happened 3 times with about 1,000 total rounds in the barrel. One was in a match and I managed to clear it pretty quickly, one was in practice, and the last was early in a match and I needed to crater while on the clock and didn't have enough time to finish the easiest stage of the match. That was the one that ruined my day.
A tight BCG channel in a billet receiver is the likely main culprit (no ability to "wiggle" when the round got caught up) and I've moved the barrel to a different set up that should be a little more forgiving. Since my Hornady sizing die is now in a landfill, I figured I'd go the small base route because having slightly narrower brass will also give it more "wiggle" while feeding. I've never been one to put much into the overworking the brass argument since primer pockets are almost always the first thing to go. But I'll accept shorter brass life (if there is indeed any) and deal with the more frequent trimming for this application.
I'll note that I haven't had this particular problem in any other caliber and presume it's partially due to the amount of bullet forward of the neck as well as the amount and angle of the shoulder. Yes, it could also be my barrel extension, but that gets complicated. My goal is to simply have it never happen again
Loaded some up a few tenths of a grain on either side of where I had been loading. It'll be interesting to see where the velocity ends up.
It's happened 3 times with about 1,000 total rounds in the barrel. One was in a match and I managed to clear it pretty quickly, one was in practice, and the last was early in a match and I needed to crater while on the clock and didn't have enough time to finish the easiest stage of the match. That was the one that ruined my day.
A tight BCG channel in a billet receiver is the likely main culprit (no ability to "wiggle" when the round got caught up) and I've moved the barrel to a different set up that should be a little more forgiving. Since my Hornady sizing die is now in a landfill, I figured I'd go the small base route because having slightly narrower brass will also give it more "wiggle" while feeding. I've never been one to put much into the overworking the brass argument since primer pockets are almost always the first thing to go. But I'll accept shorter brass life (if there is indeed any) and deal with the more frequent trimming for this application.
I'll note that I haven't had this particular problem in any other caliber and presume it's partially due to the amount of bullet forward of the neck as well as the amount and angle of the shoulder. Yes, it could also be my barrel extension, but that gets complicated. My goal is to simply have it never happen again
Loaded some up a few tenths of a grain on either side of where I had been loading. It'll be interesting to see where the velocity ends up.
#FJB