7x57 mauser is kind of a mid power round among common rifle calibers. .308, .280, and 30-06 are all progressively more powerful (certain variables not withstanding), while rounds like the 30-30, and ironically, the 8x57 mauser are a little less powerful. If it has a good scope and trained user it should reach out to 800 yards or more (note that bullet drop at 500 yards is already between 40 and 50 inches), but with greatly reduced power. Although it could be used on large game (Moose, Grizzley, etc.) most hunters would feel more comfortable with something larger bore and would be more likely to use it on mule deer, whitetailed deer and possibly elk.