SBS
Gold $$ Contributor
Unfortunately, a number of 12 twist .20 cal. factory barrels won't fully stabilize the 40 V-Max, but the 39 BK works in them. Absent the 39 BK, the only economical choice is the 32 gr. bullets, which don't buck the wind as well. I've bought a few faster twist .204 barrels for this reason and will probably chamber them up next year as I will be out of 39 BK's by then for sure.