Having no dog in this hunt, will offer a reality test:
My 45 Colts consist of two New Service Colts and a Ruger NM BHawk;
Actual use of the Ruger BH in Wyoming with 270-300 gr bullets.
Bears almost always require repeat shots. Grizzlies for sure.
Time in recoil is a factor, while a SA revolver allows aiming
carefully.
It will always be a personal decision.