This can also happen if you are not holding the lever tight against the stock when you are sitting at the bench target shooting. If your thumb isn't around the top of the wood tight, when you pull the trigger the bolt will move back a small amount and the result will look just like your pictures.
I broke my wrist very badly when I was a kid and it healed slightly off where it should be. When I sit at a bench with a straight lever action stock it becomes very painful to me after about 10 shots so most of my hunting levers have a pistol grip style stock which is comfortable to shoot.
Probably not your problem since it is only a certain type of brass but I thought I would add it for information's sake if some else ran into the problem down the road.
I broke my wrist very badly when I was a kid and it healed slightly off where it should be. When I sit at a bench with a straight lever action stock it becomes very painful to me after about 10 shots so most of my hunting levers have a pistol grip style stock which is comfortable to shoot.
Probably not your problem since it is only a certain type of brass but I thought I would add it for information's sake if some else ran into the problem down the road.


















































