RE: .243 or 7mm-08?
I too have and use both calibers. Both have their advantages over the other. If your goal is sheep hunting, I'm not sure why you're leaving the .06 behind. I've taken many deer with both the .243 and the .08 and they are both terrific. The .243 is like lightning on deer. The farthest any have gone was about 10 feet. It's also very effective on furbearers especially if you're a reloader. the December edition of BUGLE magazine even had an article about taking an elk with the little .243, although most would recommend against that. The 7mm-08 on the other hand is full power next to the 243. Ballistically, it's great. I shoot the Nosler 140gr BT, and it'll stop sheep in their tracks. I guess what I'm saying is, they're apples and oranges. You need to figure out which way to lean. the .243 on the light end vs the .08 which is strong across the middle. Your call. Happy shooting. Buy them both!