Bigger hole and more choices in bullets than the 7.62x25. Besides I can find .357 and 44 mag everywhere. My other favorites 44 spcl and 41 mag are harder to find in my area just like the 7.62x25 is.
As for choice of gun if I wanted to carry a pistol it's 10MM hands down but I'm also a revolver guy and more prone to carry one in the woods so anything between .357 and 44 mag is good by me.
Good intentions will always be pleaded for any assumption of power. The Constitution was made to guard the people against the dangers of good intentions. There are men in all ages who mean to govern will, but they mean to govern. They promise to be good masters, but they mean to be masters.