I don't like detachable magazines that protrude below the bottom of the stock on a sporting rifle, one of the reasons that I don't favor Remington 788s.
My RAR-Ps have all been reliable. They feed, fire, and eject without any problems. Unlike some, many?, folks, I haven't had any troubles with the magazines in 204, 223, 22-250, 243, 6.5 Creed, and 260.
Ruger has had a lot of success with the "plastic junk mags" in the millions of 10/22s that they've sold since 1964.
