So after reading BigCountry's thread on How to keep it ready at http://www.texasguntalk.com/forums/shotguns/7668-how-keep-ready.html I revived an old topic I once discussed in a gun store. There are a lot of scenarios in public. The scenario for this fellow was that someone boxed in his car with him and his brother in it at a stop sign. Only one guy got out and came to hold them up on the drivers side. He sat there with a 40s&w loaded with hollow points. He shot through the door with fragments wounding the would be robber. My question is this. Has anyone ever tried staggering JHP, FMJ, JHP, FMJ, and so forth? This guy never planned on shooting through his Ford Expedition car door. I assume the magazine feed is the greatest concern. Any one care to elaborate. Not the most experienced but I do not think that the robber is always going to be completely exposed and even if he is you will not yourself either. I need to see some ballistic tests for trajectory after hard surface penetration, particularly JHP & BJHP.