Well, the topic really gives away the essence of the post

My friend owns a Rock Island 1911 and some mags don't fit firmly into the mag well without "extra" effort and this has led to numerous FTF's. While I don't mind pushing on the mag a little bit more to get it to click-seat, I could see how it might be problematic in the heat of things. He's purchased a few more mags, I apologize for not having the brand on hand, and one of them only held 7 rounds until he took it apart and tweaked the spring some. Now, it'll fit 8 but the last one is a tight fit, though it still feeds. Anyone have any particular brand of magazine that runs in their RIA 1911 very well?

Thanks in advance,

Jeff