I'm interested in hearing some personal experiences and assessments of this cartridge. I often think I should get one but already have the 22-250 and some say you can't practically beat the performance of the -250 with the Swift. But when placed side by side the Swift does tower over the shorter 22-250 much like the -250 does over the 223. It seems like there should be a several hundred fps difference in velocity but that doesn't seem to be the case at least with 55's?