Ok, let me start by saying this is not your typical "advice for best ammo" question, and after much research on different ballistics and reports i'm not much better off than when i started. I will be carrying a SA XD .40, and i will primarily be carrying at work. I work in a small retail store (aquarium store) and i have already talked to my bosses (who are also pretty close friends of mine) and they encourage me to carry and are actually pretty eager for me to (the store's already been robbed once since they owned it, and 3 times in the last 10 years under the old owners). That being said, here's my dilemma:
We are in a strip-mall, as in the only barriers on either side of the store are sheetrock and fiberglass insulation. 2 layers of sheet rock are all that separate us from a restaurant on either side, which are full of people during the statistically most likely times of day we would be robbed, and the front of the store is all glass.
i need a round that will:
1) feed reliably
2) stop a threat quickly
3)fragment on contact with hard surfaces, or at least expand and slow down enough to be less than deadly
I have looked into the glaser safety slugs, but not heard many good things as to their effectiveness as a man-stopper. i have also looked into the corbon pow'rball ammo, but heard conflicting reports about how it performs through obstacles--one review said it penetrated through 1/2" plywood and then 11" into ballistic gel, another claimed they fragmented on passing through just about any obstacle. i'm also not sure how the insulation will effect normal JHP's, if it will slow them down at all enough to keep our neighbors' patrons safe.
my main concern is the safety of myself and my coworkers, so if i have to risk the life of a stranger to save a friend's i will, but i'd like to limit that risk as much as possible. any suggestions?