I have 3 of the cheap, loss leader, 550 round, bulk packs (one each rem, fed, cci) and 5 more 5 rnd boxes of various loads through mine. It has been on my 9mm 75, 40s&w 75b, and PCR. Through all that there has been three FTFeed. They were all when I let some one else shoot it. I would have to say it is reliable. More so that the ruger MKII it replaced.