Thread: Doughnut issues

Internal donuts gave me a problem in a 280ai after the first firing with nosler brass, checked by pushing a bullet into a fired case, it would stop when the boat tail/bearing surface
junction of the bullet hit the donut at the neck shoulder juction, I cut them out them with a forster interneal neck reamer, cheap and very simple.The next lot of brass hasnt given any sign of donuts at all and the laupa brass in my .243ai is fine after 3 firings but Im still checking as the round count rises.All are sized with redding bushing dies but I wind the adjuster out a touch so I dont size all of the neck. About 3/4 of the 280ai and 7/8 on the .243ai