Anyone using a four-inch .357 with 125 grain HP's as a primary weapon must be hunting deer the size of spaniels or jackrabbits!
On thick-bodied, big-boned northern deer, you really need a heavy bullet at the highest velocity reachable...that means a long barrel on your shooter. And unless you like long walks in the woods, plan to break some major bones when you shoot.
I once put down a deer, a 125 lb doe, with a 4" Model 19. The load was a 170 gr. copper-plated Markell at about 1200 fps. She had been sideswiped by a car and was in shock, so felt nothing. Took two shots: one to the body to put her down, one to the head to stop her thrashing. I decided at that point that the .357 (at least in that gun) was too light for the deer hunting I do.
If I were to use my .357 Marlin as a deer rifle again, I'd dip into a careful hoard of 180 grain Black Talons. It worked before, it might again.
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If they take our guns, I intend to let my hair grow long and acquire the jawbone of an ass.