I know its possible to load IMR-4831 for .303 British, and I have a lot of H-4831 which I would like to use up and this caliber would be another use. I saw a reference to loading it about a year ago in a magazine, but can't find the recipe. The article did say max velocity was around 2400fps. That doesn't matter, it is pretty much used as a brush gun. Bullet type is not an issue, I would use it for white tail and for just plinking.