Awesome, I've worked up to 29.7 so far. Im gonna try your 30.3 and see what happens. As far as oal, I've been using 2.251" with no issues. Thanks for the info
ARs don’t suppress nearly as well as bolt guns. Definitely quieter, but you get action noise and exhaust through the ejection port. My 16” suppressed Grendel sounds equal to my 16” .556 AR suppressed. That is with a Sico Omega 300. I wear ear pro during range sessions.