I suggest the Leupold 2.5-8X VX3i, 36 mm. I have it on my Ruger #1 in 30-06. It suits me well for caribou, moose, and goat this year. Clear and relatively lightweight. I'll admit I've yet to shoot a caribou beyond 260-ish, most under 200, and moose is not a long range thing to me, maybe 200. But...