The detachable box magazine is the only part of the rifle I had any issues with. It functions very well, is easy to load, and slips into and out of the magazine well in a positive fashion. My gripe with it was this: The magazine is meant to take three .375 Ruger shells, but I was able to stuff a fourth in there without too much effort. Unfortunately, with four in the magazine, the rounds won’t feed. Also, when I went to pry out the top cartridge, I took a chip out of the magazine feed lip. Being a thorough gun reviewer—or a slow learner, take your pick—I did this twice, both times with similar results.