Originally Posted by PhiPsi32
The gun is only as accurate as the shooter. In most cases, the gun is more accurate than the shooter. Just keep that in mind.
Correct. What makes a longer barreled handgun seem more accurate is sight radius. The error in sight alignment is not so pronounced and that's what the shooter observes. This goes back to why it is so important to practice the basic skills of good marksmanship. What a longer barreled handgun will do for you is increase velocity which in turn means more energy in any given caliber. Now this gets tricky as well because if you exceed the bullet's design velocity all kinds of weird things happen that erode performance. Another thing to keep in mind is velocity can and often is responsible for shallow penetration. It's counter to what you would think will happen but it's just physics at work.
Concerning lethality. I understand it in principle but in reality it's just a number like many other numbers. I said this before. If memory serves me right the 125gr 357 Mag HP by Remington is the king of the hill in fight stopping. It's lethality is something like 91 percent for one shot. No 45 ACP round comes close to this. Now with this in mind I hunt deer with both calibers and to date both calibers are very quick one shot killers. So in my experience both are 100% lethal. I attribute this to shot placement more than anything else. Again that's an issue of fundamental marksmanship.
Marksmanship trumps everything. More people need to concern themselves with this instead of arguing caliber, lethality and so on.