DropTheHammer,
My .222 is a 14" barrel, and as I stated before, it is the best shooter that I own. In fact, when group size is concerned, it will normally hold tighter than most of my rifles (need a solid rest off of the bench, though).
My favorite load for it is the 50gr. V-Max with, I believe, 23.5 gr. of IMR 4198. Don't quote me on that though (not at home in front of the load book at this moment). The barrel wasn't real finiky when it came to finding a good load. Both 4198 and 4895 powders worked fine for me...found the 4198 to be just a bit faster and more accurate out of my barrel. Quite a fun caliber to shoot, low recoil, reloading supplies are easy to find, does a fine job on varmints. I have wanted to try the 45gr. V-Maxes, but haven't yet...guess that could be a project for this spring.
I wouldn't part with the .222 barrel for any amount of money (all right, an incredibly large amount that would be totally ridiculous for a 14" barrel would do it).
Best of Luck,
Flyfisher