Sig 516 5.56 16" 62gr 98/2 pc'ed at approx 2700fps

[MajorDude]

Absolutely of me anything over 2000 FPS gets a gas check for accuracy.. on the 223 I install the check while sizing , then coat, then size again
doing it this way gives me great confidence that a check will not come off in my suppressor
done many tests with different calibers and alloys and so far this as worked well for me
I am shooting 50/50/2 COWW/PB/HSB. Yes the numbers don't add up.. I mix 50/50 then add 2 % Hi Speed Billet (for the small amount of copper and the tin)

Smoke I may have seen this before, but how are you PCing your 223 boolits? I'm thinking about trying the punched silicone mat/HF gun method. I have a time handling those tiny little devils.

[Smoke4320]

Shake and bake dry tumble
then pouring into double paper bowls with holes to sift powder and bbs out
then pour onto non stick foil lined trays
simple and easy did 500 is 24 minutes last Sunday and was NOT in any hurry