My Dad’s old .22, now owned by my son, has developed a very inconsistent and occasional stovepipe jam. At least some of it may be attributed to operator error, a loose sleeve on my son’s coat might have rubbed on the breech block (on the bottom of the 241, mostly identical to the Browning SA .22 rifle). But, it has happened to me, as well, and I had a T-shirt on, and nothing was contacting the breech block, for sure, when it did it to me. It seems to occur more often with high velocity.22 ammunition. If it happened more often, I could likely figure it out, eventually. The gun is cleaned after each use, always has been, since my Dad bought it in 1947. There is no burr on the end of the barrel from the gun being dry fired, a new round drops right in and right back out again. It has been very well cared for.
I’m stumped. Any suggestions?

Best,
Ted