I've got an H&R .223 Remington set up with a Leupold 2-7x33 and a Harris Bipod for Coyotes. I am still in the process of working up a load for it. So far I have used a Sierra 50gr. Blitzking, a 55 gr. Cabelas Critter Ridder, and a Speer 45 gr. spitzer. All on top of Winchester 748 powder, and CCI Small Rifle Primers, inside Winchester Brass. So far, the best group has been about 3/4" @ 100yds with the 55 gr bullet. Planning to do some serious testing this weekend, as my doctor gave me the ok to shoot yesterday.