I was not trying to give a full history. I did not say they issued the 1911 to the FBI. But they did test full power loads as it was originally designed and loaded by Norma, and if you believe it was marginally more powerful than the 40, you are lost in the sauce. I have a Shooting Times from 1982 with the complete FBI test and results article. Additionally, look no further than Wilkepedia for a history of the 10mm and it will say everything I said in my earlier statement. It clearly states that full power 10mm loads work at 37500 psi compared to operating pressures of 35000 for the 40. Furthermore, they did test the 1911 frame along with the Thompson submachine gun, and like I said earlier, the frames of the 1911 took a beating. I have loaded and used the 10mm since 1985 sir. I know it well. So I invite anyone to check it out for themselves, and see who is full of misinformation. I would like to add one more thing, It is true that the 10mm marginally beat the 45 in the tests, but that is NOT the originally designed 10mm, but the watered down 10mm lite load which would inspire the 40 short and weak later on, which even its its anemic state beat the 45 and others. But, getting back to my original point, the FBI has changed its criteria again. To further support my opinion of my previous posts, the FBI has determined that roughly HALF of their shooting incidents are into or involve vehicles, most bullets of all popular manafactures fail the frontal windshield penetration tests largely due to angle deflection. If this is something you really worry about, then you need a heavy, hotloaded cartridge.