bigalexe
Member
Ok I have somewhere up near 2000 rounds through a new S&W 22A pistol. Up until just recently it ran awesome.
Recently it started to jam a ton. It wasn't extracting casings and so after a few I decided to take a look at one of the jammed casings closely. The front end of a casing through my gun looks like the back end of a 9mm, it is crushed nearly uniformly toward the rear. I called a friend and he ordered me to stop shooting it immediately before I detonated a casing and blew my hand off, good advice. He said I probably had neglected to clean it (he knows me so well) and the gun had built up powder in the front of the chamber.
So I take the gun inside and run a brush down it a bunch of times, then the boresnake. I got a ton of powder out of the barrel so he was at least partially right. I had 40 rounds left and they went fine except for one which jammed THE SAME WAY.
So today on a semi-unrelated task I'm going through paperwork and run across the test-fire casing that came with the gun. It shows the same type of crushing but not as severe as it is happening currently.
Is it possible or probable that my chamber got cut a few thousandths short at the factory and it just didn't really show up until the gun got shot a bunch. I'm guessing what is happening is that the jams are casings at the upper limit of tolerance but it's happening kind of frequently when the gun is anything but squeaky clean. I will most likely have the gun looked at by someone with a depth micrometer but figured I'd bounce it off you guys at the boards here.
Recently it started to jam a ton. It wasn't extracting casings and so after a few I decided to take a look at one of the jammed casings closely. The front end of a casing through my gun looks like the back end of a 9mm, it is crushed nearly uniformly toward the rear. I called a friend and he ordered me to stop shooting it immediately before I detonated a casing and blew my hand off, good advice. He said I probably had neglected to clean it (he knows me so well) and the gun had built up powder in the front of the chamber.
So I take the gun inside and run a brush down it a bunch of times, then the boresnake. I got a ton of powder out of the barrel so he was at least partially right. I had 40 rounds left and they went fine except for one which jammed THE SAME WAY.
So today on a semi-unrelated task I'm going through paperwork and run across the test-fire casing that came with the gun. It shows the same type of crushing but not as severe as it is happening currently.
Is it possible or probable that my chamber got cut a few thousandths short at the factory and it just didn't really show up until the gun got shot a bunch. I'm guessing what is happening is that the jams are casings at the upper limit of tolerance but it's happening kind of frequently when the gun is anything but squeaky clean. I will most likely have the gun looked at by someone with a depth micrometer but figured I'd bounce it off you guys at the boards here.
