9 - 9.4 of H110 behind a 220 gr Sierra match king. I don't remember the OAL though. there were a couple quieter powders but H110 was not bad and it had the best accuracy
I've read that some people were successful on other forums, but anybody hear succeed in a subsonic load that will cycle an AR, but with a 150gr bullet?
Also curious how much tinkering people have done with 4198?
Just curious, I have a decent amount of 150gr and lighter bullets than 200, and have some 4198 that I just use as a blasting load for 556 (doesn't meter worth a shat through my Dillon).
So, thought I might be able to combine the 2...