Dirty gun = Pressure issues?

[greyghostnw]

do you trim your brass? Do you push your shoulder back properly? Make sure your brass is trimmed within .002 of each other 10-15 thousandths less than max in chamber. Have you taken fire control apart like plungers out as well sized brass till bolt handle just has a slight touch before it falls to bottom? Should measure around .002 less than fired case. If your not full length sizing at all its harder on your brass and bolt lugs and can create hard bolt lift. The list goes on. Case base swells if you let it get away…. Consistent redundant practice equals results on paper. Good luck.

 

[General RE LEE]

Filthy cans dropping chunks of carbon in a bore when bumped at the range or field will spike pressure.

I clean my Banish Backcountry ~ 300 rounds and I like to run a few Hoppes patches every other range trip. I also brush out the chamber every few hundred rounds to get the carbon ring.

I seldom go after copper unless there is a consistent change in groupings.