I primed the 8 cases I used when I qualified for the 1700 yard range and I have to say you have a much better feel with hand priming. I do think that uniforming the primer pockets is essential to reap the full benefit. If you aren't going to do that, then you might as well use the press and cram the primer into the bottom of the pocket every time. I like the fact that changing primer size is as simple as changing the magazine, there aren't a lot of fiddly parts to worry about.