Originally Posted by
GJM
1) Overall, I am not discounting at all the difference in terminal ballistics between rifle and pistol cartridges. I am the guy who carries a USP 45 with .45 Super ammo in AK, backed up with a Benelli with Brenneke slugs, or a Guide Gun with Garrett ammo. Discounting the difference in terminal ballistics here, purely to focus on the technical shooting problem of placing hits on target.
2) The idea for this thread came out of several discussions with Gabe on your chances, if you encountered a terrorist/active shooter situation. Most of us don't walk around with our carbines, so that means your concealed handgun is likely what you have to try to solve the problem.
3) What I was hoping for was to have some theoretical discussion, hear about actual experiences like Kevin B posted on, and then for folks to run some drills to try to quantify the technical shooting delta (not terminal ballistics difference) between the carbine your terrorist is likely to have, and the handgun, you are likely to have.
4) The reason for the Colt 9mm AR, was so we could shoot steel targets at pistol distances, and not tear up the steel. I feel like the 5.56 AR cycles faster for me than the 9mm AR, but I don't think the differences are likely to be significant in this testing.
5) Here is test one that we did. We set up three paper targets at 10, 12 and 14 yards. A Pistol Forum paper target at 10 and two IPSC cardboard targets at 12 and 14 yards. The drill was to draw the pistol and place two body shots on the eight inch circle, and then two head shots on each cardboard IPSC target. With the pistol, we settled on a 4.5 second par time for a clean run, based on several runs by my wife and me. My first run with the 9mm AR was 2.9 seconds clean, and my second run was also right at 2.9. My wife was 5.5 seconds on run one and right at 5 seconds on run 2 with the carbine. So, both slower than her pistol runs. (As a comp, she has E tickets in rifle and carbine from Gunsite, and shot a 114 and 115 with the pistol on the Rogers School test, last time she was there in April.) One difference was the AR started from the low ready and the pistol from the holster, so that obviously benefitted the AR.
6) Test two was to hit three eight inch steel plates, with one at 30 yards and the other two at 35 yards. With the pistol, we settled on a par time of six seconds, again based on multiple runs. It took a lot of concentration to do that consistently with the pistol. With the carbine, my best runs were at 2.0 seconds, and I was consistently under 3.0 seconds. My wife didn't shoot that one as it was getting late, and she still wanted to shoot her pistol.
We hope to drag a carbine out with us over upcoming range sessions and gather more data. Hope to work in the (D)AUG and AR pistol in .300 bulk.