I have an M1 that is giving me problems. It is a CAI receiver that appears to have been unfired when I bought it. The bolt is very hesitant to feed the first few cartridges in any clip.
I made up a few dummy rounds to see what the problem was, and when I inspected the brass after working a few through the action, I saw that the receiver is leaving long scratches in the sides of the first two cartridges that feed from the right side of the clip. The scratches are deep enough to catch a fingernail in, and there are small brass shavings in the receiver.
I inspected the receiver on the right side, and it appears that the cartridges are getting scraped along a sharp corner on the receiver in front of the en block clip. I don't have a real Garand receiver for reference, so I need to know if it is safe to file down the sharp corner.
This isn't the first time I have had to take a file to this receiver, I also had problems with the bolt catching on the lip on the top back part of the receiver.
I made up a few dummy rounds to see what the problem was, and when I inspected the brass after working a few through the action, I saw that the receiver is leaving long scratches in the sides of the first two cartridges that feed from the right side of the clip. The scratches are deep enough to catch a fingernail in, and there are small brass shavings in the receiver.
I inspected the receiver on the right side, and it appears that the cartridges are getting scraped along a sharp corner on the receiver in front of the en block clip. I don't have a real Garand receiver for reference, so I need to know if it is safe to file down the sharp corner.
This isn't the first time I have had to take a file to this receiver, I also had problems with the bolt catching on the lip on the top back part of the receiver.