Bear Stopping 10mm? Not likley. But your choice for a .45acp is the absolute best for self defense, IMAO! No pictures to put up yet. But my carry gun is a Kahr P45. Along with a K9 Elite 98, Springfield 1911A1 (.45acp) Smith and Wesson Mod 19, Smith and Wesson 625 (.45acp) Ruger 22/45 for Pin Tops, and round out the carries with a Browning BDA in .380.
Long guns are another matter.... The obligitory Marlin .22 semi auto with a 3X9 simmons for plinking bunnies and wood chucks in the back yard. Ruger M77 Bolt Action (300 win mag), Stag 2TL, with Eotech XPS-2 set to 200 yards. And the Crowning Glory of Accuracy - Stag Lower with a White Oak Arms National Match CMP Upper in .223, pinned 1/4 minute rear sight, 1 in 7 twist, stainless bull barrel. MOA accuracy to 600 meters...
Guns are GOOD!