Thanks one and all - lots to consider here. I really like Trailboss loads and have tried them in everything from .45 Colt to .308.
I've got lots of H335 too, I use it for my go-to load for ARs.
I was thinking of using this bullet to get started (from MOBULCO):
http://www.missouribullet.com/detail...ary=&keywords=