Just tried the 140 A-MAX today. I started 5-thou into the lands and used R-22 and 4831 sc. 51.0 of 4831 went 2900fps and shot .5 at 200 yards. Looks like a winner, it shoots 142smk's and the A-Max.
Great info, keep it comin'. I am really looking forward to shooting that cartridge. New Cooper Varminter was shipped a couple of weeks ago, just need to get the papers in order so I can get my hands on it.
My 6.5-284 likes 50.3grs of H4831SC lit by a Fed210M in Lapua brass with a 142SMK about .010" into the lands, velocity is around 2850fps. If I do my part and the wind isn't switching around to much it will put 5 into .5moa at 1000yds. The rifle is a Rem 700 SA with a 27" Obermeyer barrel in a HS Precision BR stock.