I've found Power Points to shoot very will in a bunch of different calibers. In that .30-40 Krag High Wall they shot into an inch--with a tang sight. The 55 .224's shoot as well as anything I've tried in my .220 Swift, and also work just fine on "big" game.
In fact when I was culling springbok with my PH's .22-250 in 2007, the load he preferred was the Winchester factory ammo with the 55-grain Power Point. It worked just great, and the only one we recovered (from a 350-yard shot) was perfectly expanded. In fact my buddy on the trip killed a medium-size kudu bull with the rifle and load, using a behind-the-shoulder heart shot.
