RE: 8th Caliber opinion: The .17 HMR
The 17HMR isn't expensive to shoot in comparison. Obviously, you can't reload it...But it's $8.49 here for the CCI's, and that's 50. Like Friz said, that's $.17/shot.
I love mine, and it'll do more than I thought range wise. It lacks the punch of a 223, but is one gread woodchuck and squirrel gun. Great fun for plinking, too.
I ran about 3 boxes through mine a few days ago, and had a ball. We shoot clay pigeons off the top of a mountain, and they float downward into a meadow. If they were unbroken, I'd shoot them with my 17. (OBVIOUSLY after they had landed LOL) Some shots were approaching 300 (we had a rangefinder) so holdover was a must. I was holding about 12" high at 290-310yds and breaking clays. Gun did more than I ever thought it would.