I have a Lakefield mark 2 .22 bolt, vintage unknown. It will shoot 8 or 9 out of 10 with no problem but there's always 1 or 2 empties that I have to dig out. I've tried a bunch of different ammo and they all do the same. Took it to the local smith and was told "obsolite, can't get parts, buy a new one". I won't be getting anything new anytime soon so was wondering if anyone had ideas.