HP = hollow point.
1. Duh!
First off, 22s need cleaned more often than centerfire. I'd be willing to bet a case of beer, that a good cleaning by someone who knows that platform, would alleviate those issues. You need to watch that happen and learn. I'm not that person or id help.
Believe it or not, I had a really shotty lot of minimag hp 2 years ago.Rare, but it happens. I still have some I think if I didn't already toss it.....what's your lot number from the box?
Mothers mag polish is an automotive product. Find it at AutoZone etc....Not point blank. And for God sakes, don't use a Dremel or any power tool.
2. Thanks for the tip!
3. No delicate power tools like a Dremel.