This is my first post in this forum, so here's my 2 cents. I've been shooting for 30+ years. I have a Colt Diamondback .22 and S&W-41. I bought my wife a Ruger MK-III Hunter bcz she said the 41 was uncomfortable. The 41 has jammed only a handful of times in a few years but the MK-III was plagued with jams & stovepipes from the day we bought it. I called Ruger and was told that the MK-III's were tested w/CCI Mini-Mag at the factory, so I gave it a shot - less jam's but still too many. I experimented w/different types of ammo and found that CCI did result in the least jams, and the Select ammo reduced jams & stovepipes almost completely. Yeah, it's not cheap but the Select results in a nicer day at the range. You just need to find the cartridge with the right energy for your gun. I definitely do second the post about cleaning after each use, that's just good gun care. Your gun will function better, and will wear better. Any auto will improve w/use, but CCI Select works best for me.