WyoBull,
I certainly am not crapping on your rifle, I apologize if it came off that way. Those HK rifles are super cool and desirable rifles. I'll bet you shoot your rifle well and have probably killed a box car load of varmints with it. You obviously have great confidence in your HK and that usually comes from a lot of success in the field. My only point is, as neat as the concept of polygonal rifling is, at the end of the day sometimes a nail is really just a nail. Same as all the other nails in the box. A bullet fired from your .22 Magnum all other things equal is no different performance wise than the same bullet fired from any other rifle so chambered. No disrespect intended, just fact.
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Every normal man must be tempted, at times, to spit on his hands, hoist the black flag, and begin slitting throats.