Re: .17HMR or 22LR
Wow...
A really good 22LR will give you moa performance at 100 yards...allegedly.
I say "allegedly", because I'm yet to see that 22. I have a 22 trainer, as do several of my buddies, including Savage, CZ452, 40X, Kimber Govt, and Sako.
I gone to my club's 22 benchrest matches (local - no national champions or anything), and I've never seen a 22LR lay down a 10-shot honest to goodness 1 moa group at 100.
I'm sure they exist, but it just aint that common.
On the other hand, I've shot, and witnessed plenty of ~$300 17hmr rifles shoot sub-moa at 100 yards.
For me, that makes the choice (for a TRAINER rifle) between 22LR and 17hmr easy. 17hmr. A 1.5moa rifle doesn't teach me jack shit - unless practicing offhand shooting. Offhand shooting is the only time I can't handily outshoot the rifle.
Even at $9/box of 50 cartridges for 17hmr, thats cheap. Not to mention, if your match-type 22 only shoots "well" with the Eley or Lapua 22 ammo, you could end up spending $9/box for it, too. Don't count on $18/550 bricks of 22 ammo to shoot better than 2 moa (and oftentimes worse). Ask yourself what you want out of the rifle. If you want feedback on how accurately you're shooting, I don't think the 22LR is a good choice.