The reason so many stay with the powders I mentioned above is that they are proven. Going out of that given range can result in a bent op rod which is very expensive to replace.

It is YOUR rifle however, if you want to experiment....go for it!

Randy

PS. According to the 2016 Burn Rate Comparison Chart IMR-8208 is significantly faster than the IMR-4895 and similar powders.....closer to AA 2230 and such. Were it me I would use the other powders you mentioned as having.