As time goes on, I become less and less enamored with the supposed capability enhancements offered by the gas check. This goes double in handguns.
I do have some #358429s loaded atop 14.0 grains of 2400 for the Ruger. We will see if I create a lead mining operation with this combination--grooves are right at .357", throats a few tenths over that, and sizing is a confirmed .358". Alloy is 92/6/2, lube is CR. Need to get A Round Tuit, and dispense with these square and hexagonal distractions.