Hunter 257W
Well-Known Member
7mminatree":39ysxq1u said:Since, nobody mentioned it, I would check your firing pin protrusion. I had a Chiappa Armi 45-70 sharps that had a burr in the firing pin hole. Not saying that's it but something you can check.
I had that issue with a NEF Handi Rifle. It was a 50 cal muzzle loader. Oddly when new it fired every time for the 1st dozen or so shots then started misfiring more often than not. My cousin had an identical rifle and I started looking at them and you could see with your eye that the firing pin protrusion was different. After measuring with a caliper, his gun had around .035 inch firing pin protrusion while mine was something like .017 inch if I remember correctly. I took it apart and did some careful grinding until I got mine over .030 and never have had a problem with a misfire again.
This and the problems I've had with my Marlin 336 make me appreciate all my bolt actions more as I've never had a misfire with one of them.