Don't be ridiculous! A large bear will use a Five Seven to pick his teeth with after he has finished eating you. The 40 grain bullets will do very little damage to one these beasts. A 57 round can penetrate body armor but the bullet weight is simply not enough as the tissue damage will not be sufficient to kill one of these monsters who can weigh from 800 to 1500 lbs or more. For a side arm you need a mininum of at least a .44 Magnum with a 300 grain bullet. More effective than that will be pistols chambered in the following rounds .454 Casull, .480 Ruger, .475 & .500 Linebaugh, .460 S&W and .500 S&W in a revolver. For semi-auto .45 Winchester Magnum and .50AE. Large dangerous game requires big bore heavy bullets that cause massive trauma to kill quick. Ideally 300 - 500 grain in JHP or hard cast WFNGC. This is what you are talking about killing:
Don't be ridiculous! A large bear will use a Five Seven to pick his teeth with after he has finished eating you. The 40 grain bullets will do very little damage to one these beasts. A 57 round can penetrate body armor but the bullet weight is simply not enough as the tissue damage will not be sufficient to kill one of these monsters who can weigh from 800 to 1500 lbs or more.Barring a lucky hit, you aren't going to drop a charging grizzly with one or two hits from a .44mag, you hopefully cause it to break off the charge. The weight, trigger pull and recoil of a .44mag class handgun is such that two aimed shots may be all you get during the charge.
My point was that the 5N7 has comparable power to a 9mm but about a third of the recoil meaning the gun will stay on target giving you the chance to place quite a few rounds on target. With each shot fired (loud) and each new hit, you increase the chance of the bruin breaking off the charge. Aftermarket reloads using solid copper bullets mean hits to the head and large bones have a better chance of penetrating. Hit's to soft tissue will tumble less and penetrate deeper.
For an example as to why I say one or two hits from a .44mag class handgun to soft tissue won't drop a charging grizzly, see the video I linked at post #64 and be warned, it's graphic.