I recently purchased a Remington 597 and a Remington packaged 597 30-rd magazine to go with it. The gun shoots flawlessly with the factory 10 round mags, but it doesn't seem like the spring in the 30 rounder is strong enough to continue feeding the rifle. Has anyone else had problems with these 30 round mags? From what I understand these Remington 30 rounders are just repackaged Eagle magazines...Heard anything about the ProMag 22 rounders?