It has been a reliable performer for me in the .257 Roberts, .308 Win, .35 Whelen, and even some more obscure ones like the .356 Win. and .303 British. I stopped using it a few years ago in favour of more modern powders. But I recently picked up some good gun show deals , several one pound cans. Just today I developed a some good loads for my .375 H&H rifles, using 235, 270, and 300 gr. bullets. Very versatile.