I certainly agree that a reasonably well placed solid core +300 grain slug can bring down a grizzly sized animal. The 57 though easier to handle will never stop a bear or moose as they have lots of fat and muscle which will slow the lighter bullet down considerably as it enters the flesh thus decreasing the liklihood of further damage.
My thinking was to hopefully break off the charge by placing many shots on target versus one or two with the big bore handguns.
The larger heavier bullets penetrate deep and kill fast as they are not encumbered by the limitations. It is a proven fact in hunting dangerous game and is the reality of simple physics. KE = mv.
Yes but even with a .454+ sized round, only a brain, spinal cord or major bone break will drop a charging animal in it's tracks.
Why dont you take a 57 and go hunting for a grizzly to test your theory?
Actually, a friend who lives in the backwoods of Maine uses the 5n7 as his daily carry sidearm should he come face to face with an angry moose. He said when you may have less than 5 seconds to force a charging moose to break off his charge, too many things can go wrong when drawing a big bore handgun in such high stress situation. Rather than best case one or two aimed shots with a large bore handgun, he'd take his chances with the cumulative effect of a half dozen or more aimed shots. Again, he isn't trying to drop the animal in its tracks, just deflect the charge.
Let’s see what happens when he engages an angry charging moose with a Model 57. I bet that will be the last you hear from him.
People with .454s have killed large bears with 1 to 2 shots to the vitals. Yes they charge fast sometimes but the small caliber gun is useless. Here are some stories from people from the wild who totally disprove your theory. Tell your friend in Maine to upgun before he gets himself killed:
http://www.thefirearmblog.com/blog/2009/08/31/man-kills-charging-bear-with-454-casull/