Originally posted by ugaarguy: You're operating under three failed assumptions.
The first failed assumption is that one can carry a 4" bbl service revolver in the same space as a sub compact semi-auto. In reality, on can carry a 4.5 to 5 inch bbl service semi-auto (with 15+ rounds of 9mm in the mag) in the same space as a 4" bbl service revolver.
The second failed assumption is that modern 9mm JHP ammo is "barely able to expand" from a service pistol. Standard pressure 124 gr JHPs from Federal (HST) and Speer (Gold Dot) expand to nearly 6/10" and penetrate over 12" of calibrated ballistic gelatin even after passing through heavy clothing.
The third failed assumption is that a .357" diameter LRN, which typically has little to no expansion, is going to create a larger wound channel than a .355" diameter JHP that hasn't expanded and is acting like an FMJ, when the JHP/FMJ is traveling at higher velocity. The reality is that penetration between the two is quite similar, and the extra .002" diameter of the LRN out of the .38 Spl isn't enough to make a measurable difference in wound channel
Well said. The assumptions in the OP are just that, assumptions, and incorrect ones IMO.
I prefer revolvers in general, but the reality is that a semiauto is easier for me to carry IWB, which is my preffered carry method. THAT'S what dictates my decision to carry a semiauto a lot of the time. It's more comfortable, and I'll carry the gun more as a result. And there are a lot of newer ammo choices that will expand just fine from a short barrel.
When I'm out in the woods, I frequently carry a 3" Ruger SP101 loaded with 158 gr Speers.
When I'm in a populated area, I carry a 3.3" XDs in .45 acp. Both are effective, and both work. In the XDs, I get 6 shots total in a larger caliber, that most importantly, fits my hand, and I can shoot well. However, there is the
possibility that the .45 may not expand due to getting clogged with clothing, or reduced velocity. That's why I carry a .45. Even if the bullet doesn't expand, it is going to make a bigger hole than say the 158 gr lrn .38 cartridge described in the OP. So
Alot of those small semi autos make the old 158 grain lrn in a 4 inch barrel look preferrable for stopping a threat
does not hold up as a good argument for that particular caliber since compact .40 S&W and .45 acp guns are common.
whats the difference between owning and using a revolver with 6 or 7 shots for self defense when you go out on the town and using a small semi auto that only has 5, 6 or 7 shots in it?
I'd say the only difference is the bulk of the gun to be carried if they both hold the same ammo count. The semi will be smaller. So carry what you want.