Looking to build a rifle for Antelope and Deer. I hunt Antelope in the Grasslands of eastern Colorado. Shots can range from 50 yards out to and past 1000 yards. My longest kill to date was at 550 yds with a 300WM. Deer are hunted in northwestern Colorado. I have a XR-100 in 22-250. Am wanting to use the singleshot action to build a new gun. I want a rifle that can take Antelope out to 1000 yards. Don't want alot of damaged meat. Yes, I know; Shot placement! Don't like the recoil on the 300WM. I have done plenty of reading on both the 6.5x284 and the 7mmWSM. Sounds like either would fit my needs. Just wanting your input.