I shot hundreds of them through my 22-250, they are about 100fps faster than the un-coated bullets, I think they are out of production now, so buy up what you can find. I used the 40gr ones, and they could make over 4,300fps in a standard 22-250. The Barnes Varmintathor is the same bulet without the coating. I never had any problems cleaning up the coatings. Larry