50 beowulf mags - E-lander Mags E-lander Magazine .50 Beowulf 7 Rounds Steel

I recently bought two 7 round magazines for my Beowulf. I have only shot 20 rounds through them and my rifle so far. One magazine works flawlessly but the 2nd one failed to feed twice. It seemed like the spring was a little strong when fully loaded. I think it will be fine once I get the magazines and rifle broken in with a few more rounds.