I shoot pretty much H4350 and 4451, might try 100V again next year since I have almost 4lbs, it has shown promise in the past. Get very decent SD/ES, usually in the 14/5 range.Thanks Tim! The neck wall thickness of 6mm Creedmoor brass is right at 13.5 thousandths. I turn mine down to 12 thousandths with a .271 reamer neck. This will give you 4 thousandths clearance. My freebore is .140. It does work well with the 115 DTAC. However, having said that, I would now have opted for a .155 to .160. I think this would give a bit more flexibility. I am also using VV N160, which is cool burning. I am still getting 3080-3085 with the DTACs without high pressure. The cases come out like smooth butter. My E.S.s are NOT what I like, they are running at 12-15ft. e.s. I like single digits, however, I can't seem to get there with the N160. Apparently it is not short-circuiting my 1000 yard vertical!