I bought a makershot speedloader, one of the loaders that just pushes down the follower enough to seat in one cartridge, and it's absolute crap. I have no issues loading these magazines by hand, you just push down and forward and the cartridges seat without rimlock. I haven't had to fix any rimlocks since I started loading them by hand. When the magazines were new, it wasn't very easy, but once they're broken in I haven't had any issues and can just do it while im watching something else. Maybe it's because they're coated in that magtech grease they slather all of their bullets in.