I started to powder coat for all of my boolits now, 45-70, 7.62x39 and 30-06. My question is regarding Gas checks. on all three calibers, i see no change in accuracy from the regular pan lube and an additional gas check on the 30 cal boolits but am wondering about the gas check. with the 45-70, its a HB so no need of a gas check. however with all the 30 cal stuff a different story. on the 30-06, pan lubing and gas check I am running a 180 gn RN at about 2250 fps and 100 yard clover leafs with no leading. with the 7.62x39 same story. 155 gn flat nose NOE boolit 1800 fps, pan lubed, gas checked 1 1/2" groups at 100 y and no leading. or another load for the 7.62x39 is 185 gn round nose lee pan lubed, gas checked 1512 fps. 2" groups at 100 y and also no leading.
I have read through this topic and cannot find anything conclusive on whether to gas check a powder coated boolit or not to. all of my 30 cal boolits are designed for gas check but I like the fact that with the powder coating on them they are still a little fatter for my .313 barrels so its a good tight fit.
what are some of you out there doing running the same caliber, powder coated doing at these speeds?? and I dont want to modify my molds to remove the gas check.
Thanx for the input.