Thread: Tight chamber and marks on projectile

I agree with @Plinky and was going to say the same thing. There is "cleaning" and there is "scrubbing" with, I use JB BORE CLEANING paste. And just keep scrubbing it with bronze or nylon brushes until cleaning patch go through smoothly and come out clean.

Are you cleaning the fired cases in a tumbler before you start the reloading process?

Nobody has asked or mentioned case trim length. After full length resizing are you checking the case length with calipers? Then trimming to length, deburring and chamfering. Somebody else said they suspected deformation on seating projectile, chamfering can mitigate that.

Last suggestion, are you cleaning the completed cartridge to remove excess lubrication and any dirt the case might have picked up?

Some people say cleanliness is next to Godliness, but I reckon cleanliness is next to accuracy!