I happen to be a fan of the SMs and own several; 6.5RM, .270WSM, 7mmSAUM, .300SAUM, .300RCM, .325WSM and .350RM. All the ones I own feed just fine. Most of mine are Remington Model Sevens (or 673s) with one Ruger and one BLR. I'd not call them superior to any of their standard mag cousins, but I like them because they are shorter & lighter. My 20" barreled .300RCM will spit out a 150gr bullet 200 FPS faster than a 24" 30/06 in a much shorter & lighter package, which is what I want & like from it.