I shoot the 275 grain in my Remington .54, and just bought the 325 grain. They are a little harder to get down the barrel, but they group well for me. I dug a couple out of the sand and they retain all of their weight. I like the 325's because they are longer than most lead bullets, and should fly better. I will be shooting the 275's tomorrow for deer, should a deer worthy of taking cross my path.