Got a 22" 6.5CM barrel from Jim Briggs....take off from a Model 11...and put it on a stock Axis action. Took it out this afternoon to shoot the 100gr Nosler BT. I used the load data found at Guns & Ammo for the Nosler.
I used 38gr of IMR 8208 XBR load but went with a COAL of 2.775" COAL rather than their 2.50" Federal 210 Primer and new Hornady brass.
5 Shots=.80" Looks like 8208 is definitely a powder to consider.