He must work up the load for his rifle. The primer has to do with the powder used, not the bullet construction. Magnum primers are about the powder too. Rarely needed by typical .22-250 powders. Unless he's shoot coyotes in the cold. Never seen any advantage to BR primers myself.
"... a woodchuck to 400+ yards..." That'd be him, mostly. A chuck at 400 is an itty-bitty, wee, small, tiny target he's lucky he can even see.
Anyway, Hornady claims they get 3800 FPS out of a 24" barrel. No mention of what twist, but that's not unusual as factory load testing uses a universal receiver not an actual rifle. Any powder that gives that kind of muzzle velocity will do. Mostly Max or very close to Max loads run 3800 FPS. Hodgdon's site tested with a 1 in 14, 24", barrel so the velocities will be slightly different. Tell him to look at the Factory Duplication load in his manual, if the one he uses has that, too. The Lyman manual does.