Bud, I took this antelope in WY this year at what I thought was 211 yards. What I did was, range a tree that he was near which was 211, yet he was standing just beyond the tree on the next hillside. When we got to him, I ranged the truck and it was actually 235. I'm using 3 "sticks" of American Pioneer powder which grouped substantially better than any of the pyrodex, either loose or pellets. The bullet is the new Barnes Boat tail ultra slam 285. They may call it the Spit Fire. Anyway, I had practiced to 200 yards for several weeks before our trip. We shot for 4 hours on Saturday before out season opened. I noticed that my bullets were hitting about 2" higher in WY vs. Ohio at 200 yards.
I dumped the antelope where he stood. If I knew how to upload a video, I'd post it. We have all 3 hunts on tape.
Here he is, and this is the longest shot I've ever made with a ML. Seeing the shotplacement right in the shoulder boosted my confidence even more. I would certainly take a 250-275 yard shot with my Knight disc extreme.