I've drilled & tapped all of my .30's for 3/8" bolts that I screw in the ends & torque to 52 ft lbs.
my 1/4 bore & smaller get a 1/4-20 bolt torqued to 38 ft lbs.
my shotguns are threaded on the OD with NPT & I use a black iron pipe cap.
I don't know yet how any of this effects accuracy because I never see any damn animals to shoot... and i don't want to waste my bullets on "target practice" Phhfftthht!!
But I damn sure aint getting no mud, bugs, water, ice, snow, sticks, pine needles or anything else dangerous in my barrels.
