.[/quote]
I don't recommend pulling off a snap shot at animals over 400, even with some behemoth overbore. Seems like an opportunity for a rodeo. Long shots require a precision that takes a few breaths and more than a few seconds to get right.[/quote]
I agree and I usually can pre-range a marker at 350 or 400 and that is my limit unless I can stop the buck and settle in to the shot. Tough passing on a twelve pointer within your scope but the cross hairs just didn't settle in enough to be sure. Basically what has worked and I probably should stick with it is any bullet with a 400+ BC and around 3200 fps.
The 25-06, 270 WSM, 280AI, 7RM & 300WM all do this with my loads. Working up R26 loads for the 243 and 6AI that should fit the bill with 95-110 grain bullets.