Re: 300rum reloads
In my rifle, m700 26" bbl, 300rum, it only like retumbo for heavy pills, 200gr+. For lighter pills like 165gr GMX bullets, I use 79gr IMR4350. I am using 94gr of Retumbo for 210gr SMK, which should work pretty well for you amax's. My rifle never responded to Re25 with any bullet. BTW i use CCI250M Primers.
"I'm interested in rifles, but only accurate rifles are interesting". Col. Townsend Whelen