Oh, heck no! This is your excuse for a .458 WM!
I have killed in excess of 20 moose, using following calibers:
.22 Mag handgun (2 road hits, shot in heads from feet away - the rest were while hunting)
.243 (100 gr)
.270 (150)
.30-30 (170?)
.30-06 (various)
.308 Norma Mag (180)
.338WM (various)
12 gauge slug
So far, I haven't noticed any difference in killing ability between calibers or bullet weights, given similar shot placements. Some were lung shot, some were CNS. None were beyond 160 yards, only two over 100.
Zero at 200 is good. That's what I do mostly. That should put you somewhere around 8 inches low at 300, and 24 at 400 should you need it. Likely not.' but easy to remember and adjust to minute of moose.
I 'm hoping to use both my .260 and my Dad's '94 -30-30 yet before I crap out...
Most of the Eskimos up here use .22CF or .243 for just about everything.
The 7X57 will do fine.... For that caliber, I'd choose a mid-spectrum bullet weight of excellent construction of 140 or so. Doesn't need to be premium, but doesn't hurt either, as long as it is accurate.
