Consider What you're going to shoot and at what Range. You'll quickly find that the heavier 6.5 and 338 (hunting) bullets have a bit of an edge at long range (400-1000 yds for hunting). The bullet BCs and SDs are so high, these bullets maintain V at distance, causing them to drop less and hit (and penetrate) with greater E. You can find some good ones in 7 and 30 as well. You just need a larger case (NOT a needmore- A WSM/RSAUM/6.5-300 Wby, 6.5-284, et. al. These guns are super accurate, a pleasure to shoot, and deadly to the big 7s, 30s, 338s as I own 'em all, but you're going to be shooting 170+/190+/225+ gr bullets behind a lot of powder to achieve your goal. How do these big cannons shoot so well? Proper weight, stock design, accurization, quality scope and mounts. Again, if you're just taking QUOTE]
Your post brings back great memories. Woodchucks taught me to shoot many years ago. Then I moved to Wyoming and learned to dope the wind on prairie dogs.