Sumo,

For a varmint rifle, the DPMS/Remington (as pictured in a previous post in this thread) chambered in the .243 win is a tough combo to beat. I have been hunting with the R-25 in .243 and a Rem. 700 CDL SF .257 weatherby mag. They are both fast, hard hitting (for coyote size animals) rounds with mild recoil. While the R-25 is not a "Tier One" rifle, it serves well for predator hunting. I can shoot under an inch with most rounds and consistently close to 1/2 an inch with the hornady v-max 58 grainers. That being said, I have seldom used the follow up shot that using a semi-auto rifle affords. So, the Remington 700 gets grabbed more this year on my hunts. A single shot cooper would be an excellent way to go too. I've heard that they shoot in one hole at a hundred with the right loads and skilled rifleman.