Hi, guys, didn't mean to be cryptic but I have a large stock of a Canadian military surplus powder called CMR 100. I got it from
www.gibrass.com but I think he's out at the moment. Anyway, it's just a smidgen faster than H4895. I used the equivalent of a mild charge of 4895 and shot a first group of .860, five shots, 100 yards, issue sights. One of those where I asked a friend whether I should fire the fifth one. Obviously a fluke but I've shot several more groups right at an inch and don't believe I've had one go over 1 1/2". I haven't put it on paper at 200 but it seems to hold together well for silhouette plinking/practice at the 300 meter pig. So, I don't guess my data is any use to anybody but the rifle obviously likes the reasonably short, high quality bullet. I bet 4064, 4895, Varget, RL15 and any other powder suitable for target loads in the .308 would work as well. Sorry I can't be more helpful but I think the bullet is the key.