I used to shoot rimfires quite a bit back in the day, but do as much now. However, my wife does have a couple of .22LR firearms (a rifle and a handgun). The rifle is a Ruger 10/22 and the following is a review of the magazines that I've used in said platform. This is certainly not exhaustive or scientific, but rather just what I've noticed over the decades. The original 10-rounder: It works and works well. As it is flush-fitting its easy to carry. The downside, of course, is it only 10-shots. Ruger BX-25 magazines: My experience with these is limited, but the little I've seen is very positive. They feed reliably and quality control looks to be good. The only negative is they are more expensive than most aftermarket mags. The 25-round steel-lipped Butler Creek magazines: Of all the aftermarket magazines, I've had the best luck with these. With very few exception, they feed reliably and hold up after years of use. The 25-round plastic-lipped (Hot Lips) Butler Creek magazines: I've had really spotty, at best, results with these. Most were junk that simply would not feed. Some where hit and miss with the jams. As they aren't much different cost wise, the steel ones are the way to go. Blackdog 10/22 50-round drum: I read rave reviews on these and know at least one guy who tells me his is the cat's pajamas. The one we had was worse than worthless. It was nearly impossible to load and it would jam every 2-3 rounds. It finally seized up solid and I had to take it apart to extract the live rounds. We may very well have just got a lemon, but considering their cost and how bad the one was, I won't be trying this one again. Eagle 30-rounders: These are, in my experience, pretty hit and miss. They aren't bad for plinking, but the quality control and the reliability seems to vary a bit. Anyway, I hope the information is helpful.