One thing seldom mentioned in these "What if" scenario things is the environmentals... what altitude are we talking about... what temp. At 10,000 ft ASL we have a lot more energy at 1000 yards than at Sea Level...
Take a big ole' deer to walk away from a well placed shot from a 300 Win Mag with a 220 high BC bullet at nearly any range.
I have shot deer with a 300 win mag in Remington Sendero to 1030 yards. Lieca laser measured. Nozler 165 ballistic tip, 79 gr R22, CCI mag primer, 3340 fps. Leupold M1 scope 4.5 X 14. Until this year I had not shot a deer in the last six years under 850 yards. I tried one at 1170, but something was loose somewhere. Perfect alighment but up and down. When I got back to the range I had two .25 inch groups but they were spaced 1.25 inches apart, one high, one low.
Thanks, I went shooting with my recruiter on Saturday and I brought my dad's Weatherby Vanguard in .300 Win Mag along with an AR-15. I unfortunately have not been able to shooting for a month or so, so it was really nice to ease my itchy trigger finger.
While shooting I suddenly found myself liking that .300 more than ever. I liked the power it had every time I pulled the trigger, so I was now hooked on that cal in a custom weapon. It was also nice to have because it was about 20 degrees so it also made a good handwarmer during shots.
Ya, I think you watched me shoot that deer at 1030 yards. I also think you watched me miss that doe at 1170 four times in a row. You should tell these guys that you want to get ride of a perfectly good 300 mag after shoulder surgery. Later.