Re: Help with encore 204
LRE, the Encore barrels chambered in 204 have a 1/12" rate of twist and sometimes they won't stabilize the 40 grain bullets. Bullets making keyholes in the target means the barrel is not sufficiently stabilizing the bullets. I have the Encore Prohunter barrel in 204 and it will shoot the 40 grain Hornady V-max very well from my handloads, though I don't know if it the extra 2" of barrel length or what that makes this possible. As posted by MachV, maybe you should try a bullet with less mass/length and see if that will remedy this.