that some carbine packs a lot more power than a pistol. My 10mm with 16 rounds ready to go, each one 200gr @ 1230fps is quite near the power or maybe a little more than some carbines.
10mm is towards the tops of available defensive handguns, but even then when you look at the actual injuries produced, the .223 will still produce a bigger wound.
It has about the same muzzle energy as a 30/30 rifle at a hundred yards.
I don't think that is correct. But even if it was, you aren't shooting them at 100. You are shooting them across your home.
I can engage multiple targets faster with this pistol than I can with my AK74 and am pretty sure the stopping power is as good or better than the 223 or 5.45x39.
As a competitive shooter, in action pistol (IDPA/IPSC), an avid 3gunner, and a firearms instructor, if you can engage targets faster and more accurately with a pistol than with a carbine, you need to be shown how to shoot a carbine more effectively.
Comparing a stocked weapon vs. a handgun, the stocked weapon will be easier to get hits with from anything past conversation distance, to way the heck out there.
I don't say that to be offensive, but a shoulder fired weapon is just faster and eaiser to use once you know how. The problem is that many shooters keep thinking of CQB style carbines as hunting rifles, and they shoot them chicken winged, with the high elbow, traditional bladed off rifleman style. There is nothing slower or more awkward.
When you shoot a carbine for HD, you want a shorter stock, and you want to hunch down behind the gun, with the elbows locked down. (another reason a lot of posters who don't know how to use one make fun of vertical foregrips). When you do this, it looks almost like an aggresive iso stance pistol shooter. You swivel quickly, you can move quickly, etc.
And .223 and 5.45 will beat your 10mm. I like 10mm, but it is a handgun cartridge.
The Box doesn't have any definitive word on drywall alone (all rounds went through 12 "walls"), but using stiffer pine boards, the .223 far out-penetrated all handgun rounds, even if it did yaw like mad.
Anything that has the potency to seriously hurt a human being is going to zip through building material. I don't have anything scientific, but in my own personal shooting, I notice that the 55 grain bullets have a lot more issues going through various materials than pistol bullets.
And even if it didn't fragment like you would hope (there's a reason TAP is the best selling ammo amongst people that shoot guns indoors for a living) I would rather be hit by a yawing 55 grain sideways bullet than a still on a ballistic trajectory undeformed 9mm.
- I am 25 and I have been unarmed for 24.5 years of my life and I am still alive! Like I said, now I at least have SOMETHING in the event of an emergency to protect myself. So whether it is loaded or stored I have some sort of protection. I am more concerned with being able to afford range fees and .45 cal ammo 
on targets than BG's
