Have never been able to get Varget to do well for me in my other 308s. Yesterday I loaded up 20 178 Amax with 41 grains of Varget. It done great out of the new Savage. I had enough to load 10 more and can't find any now. Of course. Is it powder , bullet weight, length as I'm going to have to use something else. Do I try and keep same velocity with different burn rate? I'm lost on this one. I've got IMR 4064. IMR 3031. IMR 4831. Reloader 15. H-414. H-4895. Reloader 22 and IMR 4064. No chronograph but Hornady shows about 2400 fps in 22 inch barrel and I'm shooting a 20 inch. Any suggestions.