Re: 338NM and 285 Horn?
Spook,
Mudvayne has some threads here in ELR with some data for a 300 Berger. He might have some insight for you.
From my personal experience shooting a .338 snipetac.
I tried 300gr SMK"s, 285gr Hornady's, 275gr Rocky Mountain's, and 300gr Berger's.
The Hornady performed the worst, way off the rest. After 1450 yards it was unpredictable. I'm not here to bash Hornady, because I like thier products. But making the 250gr, and 285gr in an A-max would have made more sense to me. The 285 would be a great candidate for Bryan Litz to measure.
If it was me I would try the 250gr Hornady, take the speed over BC and give it less air time to fuck up!
Another guy to talk to would be Tom Sarver from Thunder Valley Precision, in the tactical comp forum. I think he is well versed in this area, he has helped a friend of mine on the same lines.