Big Game works pretty well. Back when the Ramshot powders were first introduced, I had a Ruger 1B in .220 Swift, with the 26" barrel. They didn't introduce Hunter for a few more years, so I tried Big Game with 55-grain Ballistic Tips. The maximum load they listed back then (it's probably changed) got around 3900 fps, but accuracy was just so-so, around 1-1/2". I called the head tech at Western Powders and he suggested I try magnum primers. That cut group size in half.
