I don't believe that for a second, Bob! All you gotta do is rig up one of your several accurate rifles with a decent LR turret (like an M1 on that 3.5-10 you were talking about), or just start twisting the turrets on that Summit or yours, and start playing around at distances that push your abilities! Pretty soon it'll be just another day shooting steel at 1000 yards. Then when an animal appears at 800 it will be second nature smile

Or course, that is assuming you have access to somewhere you can practice at those extended ranges...