Skeeter, thanks for the clarification. I was just going by the info I have picked up from articles and such on this rifle. It looks from your numbers with your lighter bullet are not that far off on the foot pound claim, however. Given that the 300 grain retains better down range energy than a 275 (not allowing for Coeff. of course) I think the energy claims are pretty close...enough energy to anchor a deer.
As far as bullet drop, everyone I know uses rangefinders and M.dot type scopes, so as long as you know exact distances and all that goes with long range shooting. It should be possible to do it as proven by a number of people.
Again, I am not that knowledgable or that good a shot to shoot at a deer at that distance with any rifle. But some can do it consistantly. I would like to drop a deer at 300 yards with a ML. Again thanks for ballistic stuff! Donn