John in WI
09-02-2012, 10:52 PM
I have a home-built AK that has not worked properly since day one. One problem is that it doesn't seem to want to eject properly (but that's a different story).
The question I have here is--how do I slug a chamber and bore, and what can I hope to learn from it? The problem is, at 20 paces it's throwing lead all over the place and 8 out of 10 of the holes on cardboard showed they were hitting sideways. It seems like they are literally coming out of the barrel tumbling?!
I checked the muzzle device by installing a wooden dowel in the barrel, and the brake looks perfectly centered. So it's not a clearance problem. The crown looks ok too.
Other info that might be useful--the barrel is a US made, non-chrome lined 7.62x39 from a well known AK parts/accessory dealer. The machining looks fine and I had a smith double check the head space.
Thanks for any advice--I know AK's aren't tack drivers--but this thing is throwing 2' groups at 20 yards.
The question I have here is--how do I slug a chamber and bore, and what can I hope to learn from it? The problem is, at 20 paces it's throwing lead all over the place and 8 out of 10 of the holes on cardboard showed they were hitting sideways. It seems like they are literally coming out of the barrel tumbling?!
I checked the muzzle device by installing a wooden dowel in the barrel, and the brake looks perfectly centered. So it's not a clearance problem. The crown looks ok too.
Other info that might be useful--the barrel is a US made, non-chrome lined 7.62x39 from a well known AK parts/accessory dealer. The machining looks fine and I had a smith double check the head space.
Thanks for any advice--I know AK's aren't tack drivers--but this thing is throwing 2' groups at 20 yards.