OK, I have a decision making crisis and I thought I'd put it before this body of experts because, when it comes to knowledge, you guys are full of it.
So here's the problem; I have a Remington 700 Long Action sitting in my parts bin and I'm trying to figure out what to do with it. I've pretty much decided to make it into some sort of long range coyote/varmint rifle, but the problem is, what caliber? I'm ready for a 6MM something, but I'd like to know what others here have to say. The caliber I choose will be for a repeater. So far I've looked at 6MM-06, 6MM Remington, 6.5-06, and 6.5X55. Any caliber I've overlooked?

So here's the problem; I have a Remington 700 Long Action sitting in my parts bin and I'm trying to figure out what to do with it. I've pretty much decided to make it into some sort of long range coyote/varmint rifle, but the problem is, what caliber? I'm ready for a 6MM something, but I'd like to know what others here have to say. The caliber I choose will be for a repeater. So far I've looked at 6MM-06, 6MM Remington, 6.5-06, and 6.5X55. Any caliber I've overlooked?