willymc
Member
I'm working up loads for my 300 AAC blackout. I'm using 125gr. Nosler ballistic tip over Lil Gun. Their data says that 17gr. has a load density of 102% and 18gr. is 108%. That is with brass that is trimmed to, I would assume, 1.363-1.368. They say their 18gr. load is the most accurate. I bought some 300 blackout brass and it turned out to be trimmed to an average length of 1.355. Loading 17gr. Lil Gun into a 1.355 case should give me a load density of more that 102%. As long as I start low and work up slow, checking for over pressure signs as I go, I should be ok, right?