The gun barrel would have to be tilted more than that. Even my 223 or 308 or 44 mag would be tilted at a 25-35% angle for that shot.
Not so sure about that. I ran the load he is using and for a 1,000 yard zero he should be 946" high @ 550 yards, which is also 74" high @ 25 yards. If you plug those numbers into an angle calculator, 74" rise @ 900" of run, it comes out to just 4.7 degrees. The muzzle angle would have to be a little steeper than than to make that 74" mark @ 25 yards but not all that much.
