My loading manuals show a max load for .45 Colt @ ~980fps with a 250 gr bullet. How are you getting 1400 fps with a 325gr bullet?!?
Lets compare apples to apples here. You are either comparing listed factory loads or the hottest handloads one can safely make, which is it. You are comparing hot loaded 10mm to factory .45 colt, which is intentionally loaded light for older weaker cowboy guns.
I dont know who "Keith" is, but max listed velocities for 245gr bullet in .44spl are similar and are in 900-950fps range.
If you don't know who Elmer Keith is you really shouldn't be having this conversation. And those listed loads are nowhere near what a handloaded cartridge can do. Trust me, I have loaded some real stout .44 special, and Magnum and the hottest 10mm round comes nowhere close. .45 colt offers even more case capacity and larger bullets, and assuming you have a gun to handle the load the sky is the limit.
Where are you getting your numbers from?
You may or may not understand that the reloading world is not encompassed in a reloading manual written by lawyers scared of getting sued if some idiot tries to put a hot .45 colt load in an antique cowboy gun. Published data is not the be all and end all of reloading. Someone had to write that book in the first place. In the case of the .44 special, and magnum that soemone was Elmer Keith.
I dont have any experience loading either, and i assume those are some kind of +P+ loads that MIGHT be safe in SOME modern revolvers.
This is obvious.
Even then, they cant touch the Glock 20 in terms of total combined power of all the rounds in the magazine.
How many rounds are you gonna get off at a charging bear, or trying to shoot a game animal with a handgun? This is Canada afterall, and I will take a reliable tuff as nails revolver in .44 mag, or .45 colt any day over a Glock 20, and I am a huge Glock fan. Guess what? The CFO won'y even issue an ATC for carrying a semi auto anymore. Guess why?
Lighter gun, less recoil, and more accurate follow up shots.
In a bear attack situation, or even a hunting situation you may only get one or two shots! I will take the biggest round I can get thank you.
10mm has successfully taken the largest game in North America. Is it the BEST choice for grizzly hunting? Certainly not, but its perfectly adequate if the shooter does his job.
Well you got something right. It is adequate, but certainly far from ideal. Guess what would be ideal for most large game hunting in N.A.? Probably a .44 mag, or even hand loaded .45 colt, but baybe a .454 Casull. All much better choices than a 10mm.