So are you shooting the PC boolits sans gas checks.
Yes for the most part in everything except gas-operated semi-autos (AR15 etc). I use a gas check in those applications because gas cutting through the coating can happen as the bullet base passes the gas port.
In most other applications, I have had good results both with and without gas checks (usually try both ways) so I generally omit the gas checks now in bolt actions, pumps, etc. (Note the expanded Saeco 352 in my first pic above with a gas check - that was part of early testing to figure out if the check was needed or not in that 35 Remington pump gun. It was not.)
