I shoot the 30 XCB in my Rem. 770 in 30-06 with 22" barrel 1:10 twist, bullet is cast from 50/50 PB/COWW, powder coated and quench right out of the toaster oven. Bullets are size to .309" and checked with 30 cal Gator checks. My favorite load is 35.0 grs. of H-4198 with a COAL of 3.070 in my rifle.
5 shots at 50 yds.
Chrono Data
Low: 2277
High: 2309
Average: 2292
Spread: 31.71
SD: 15.39
Some other bullets and powder combinations I've played with in the 770.