........ or the ruger gp100 6" barrel in 357 mag......Which in your opinion is the better choice.
357 Mag! I like the versatility of the 357 Mag. I shirt pocket 10 round cartridge carrier with 4 full house 357 magnum loads, 4 38 special loads, and 2 38 special shot filled caps, plus six in the cylinder provides a lot of of alternatives. Where I live you can shoot grouse, and a variety of other small game while out deer hunting (the shot caps and the 38 specials) for augmenting your camp meals.
I originally purchased a 357 Mag handgun after deer hunting one year when I laid my 30-06 rifle against a tree and started cleaning my recently shot deer and then heard a pack of dogs in the distance, and realized that my rifle was not within reach. It was a bit un-nerving to stand up with bloody hands, pick up my rifle and lay it on the ground next to the dead deer. Since then I have always gone hunting with some kind of fire arm.
While the 45 M1911 is fine handgun, I don't think it has the versatility that a 357 Mag does