There is a movement away from heavy revolvers to 10mm semi-automatics for defense against large, dangerous animals.
As we develop better understanding of terminal ballistics it is becoming apparent that at handgun velocities shot placement and penetration are what really matters.
It is easier for the majority of people to place more shots, more accurately in less time with a semi-auto than a revolver.
The Greenland Sirius Dog Sled Patrol uses 10mm pistols as back-up guns for protection from muskox and polar bears. One of their members has in fact killed a polar bear with his 10mm.
If you're like me and don't like Glock's pistol ergonomics look at the Springfield Armory XD-M. The S&W 10mm, IMO, will need a year to prove it's reliability.
