Re: .308 Norma Mag.
Up until last month my best loads were with imr4350 and H4831 in 165,180 190 and 200gr bullets, mostly Sierra's, which I quit using just because I would consistently find the jacket and core separated in animals out to 500yds.
I stumbled onto a load with H1000 ,Berger 210's and standard primers. 2928fps from a 26" barrel and groups under 1/8" at times. If you want to shoot far 210's might be something to consider. Cliff