jdonovan wrote:One thing to watch on the 44M, when you are looking at energy, its most often quoted from a 7-8 barrel. The 4" barrel will be about 33% less velocity, and about 50% of the energy.
Good points to consider, but I already have. The premier dangerous game hunting/defense ammo manufacturer for 44Mag/45-70 is Garrett Cartridge out of Texas. They've been doing this for decades; their ammo has been proven extremely effective on every dangerous game around (including African's big 6); they're used by many government grizzly response teams; etc. They also publish real data for 4" revolvers.
I shoot their 45-70 in my Marlin. Excellent stuff.
jdonovan wrote:Most normal 44 mag offerings are in the 40-50 oz range, and in my experience are above what most recreational shooters consider acceptable recoil. The 25 oz gun is going to be fairly stout in recoil.
I already have a 44Mag, but as you note it's much heavier. A loaded 329PD weights about the same as a loaded G29; 6 rounds vs. 10 though.
jdonovan wrote:My vote would be for the G20/29 platform. You'll have 90% of the energy of the 44mag, in a slimmer profile, and 3x the ammo (G20).
For East Coast black bears either will work fine with the right ammo. I own and have taken bear defensive handguns out for a hike. The need here is to go super light weight to support longer/faster hikes (figure weeks vice days).
For bear defense it's not really about energy though, although that is one metric. A defensive bear shot is different than a hunting shot; besides a bear that isn't trying to eat me is a bear I'm leaving alone. A charging bear is not your typical shot. With the proper rifle/shotgun you have options as they have enough penetration to break the shoulder/hip bones. Even massively powerful animals such as the grizzle need bones, can't chase you otherwise. However, with a
reasonable handgun you will actually carry when hiking, you're limited to a head shot/CNS shot. You need to bust the skull or spine on a large, charging bear. For these woods defensive bullets, sectional density is far more important as penetration is critically important. By that measure even the mighty 500SW is only CPX3 when loaded to the max with a ~500gr bullet. Obviously a well placed bullet during a hunt is different than a defensive shot.
The 10mm is a low CPX2 category cartridge while the .44Mag is a high CPX2 any maybe a CPX3 (when either is loaded with the proper wide flat nose hard cast bullets). My requirement was to keep things as light as possible. The revolver has the slight cartridge advantage and contact shots (remember bear defensive shooting), while the G29 has the capacity and speed advantage. Both are high on my list, but I've shot a lot of Glocks, no lightweight 44mags.
I might have to take you up on the G29 though.