Consider a little game getter...... I carry a S&W 317 Snub .22 in an ankle rig in a Uncle Mikes holster that was modified by one of my parachute riggers to hold one of the small 50 round boxes of .22 ammo also. A local awning shop can sew one up for ya like mine easily.
The small lightweight revolvers give ya lots of value during a horatio at the bridge situation against superior numbers , not to gurantee a kill but will change the cowards minds with accurate fire......and the revolver vs semi-auto will use any brand of .22 ammo ya can find, shorts , longs, CB caps for bunny's er birds etc etc .
The .22 is my backup and carry 24/7 rig when around the house. The 1911A1 or my Glock 21 goes in the waistband when I leave the house.
Just some thoughts on what I like for my personal security....after watching Reginald Denny get an ass whuppin in the LA riots I considered the possibility of having to deter a large number of agressors that were intent on killing me that may or may not have firearms.... The little .22 revolvers were my choice as backup to my self defense handgun, now with the superlight airweight Model 317's available in 8 shot it makes for a viable tool to pack around.
Stay safe !