Hi, new to the forum. This sounds like the problem I am having with my new prodigy ds 4.25. As it was new, I only took one magazine to try the gun out, 17rd mag that came the purchase. At the end of each load, the last rd failed to feed multiple times. Round would work fine as long as it was the last rd in magazine. I plan to test the 20 rd mag, and have ordered 2 additional 17rds. It sucks, but problem continues, I’ll send it in.Seems to be a common problem.