by UnaStamus on Fri Feb 28, 2014 12:08 am
Go with a 9mm as your first carry gun. 9mm ammo is plentiful and easy to obtain for minimum of cost under normal circumstances (non-gun panic times). There are numerous defense/carry options for the 9mm that perform phenomenally. The 9mm is still small enough to accommodate smaller frame pistols like the Kahr CM9/PM9, Ruger LC9 etc. 9mm compact/carry pistols tend to be consistently reliable as well. In terms of being shot from a sub-compact/micro-compact platform, the 9mm is ballistically the minimum caliber that can still perform sufficiently to meet terminal performance standards. .380 and smaller pistols, and .38spl loads from a snub-nose revolver do not generate sufficient velocity to perform to ideal minimum standards. They can still be effective if used correctly, but the overall effectiveness is heavily retarded by decreased velocity.
In terms of a .380ACP, it's been my observation that guns that are that small tend to be very finicky and often are not predictably reliable across the board. Case in point- the Ruger LCP. I know 3 fellow cops using LCPs as back-up guns. 2/3 have had significant problems with their pistols. I know guys with Kel-tecs that have also had the issues.
With relation to ballistic performance, the .380 ammunition is not what it appears to be. Most .380 loads are advertised with velocities and energies that were measured using barrels much longer than would be used by the typical user. Hornady for example advertises 1000fps/200ft-lbs from both the 90gr Critical Defense FTX and 90gr XTP. The "small print" is that the load was tested out of a 4" barrel, and the average .380 carry pistol uses a 2.5"-2.75" barrel. That much barrel length drastically affects the performance. Federal and Speer both test their .380s using 3.75" barrels. In contrast, CorBon tests using a 2.5" barrel, so their figures for their 80gr DPX and 90gr JHP are very accurate. Such is why CorBon is the best non-FMJ .380 ammo for carry, should you decide to actually carry .380ACP.
When you use the "micro-compact" type loads like .380ACP, .32ACP, etc, these details are not minutiae. They're critical. With larger/more powerful calibers like 9mm, .357mag, .40, .45, etc, they're far less critical for most applications.
Food for thought is all. I'd still rather carry a .380 than carry nothing at all, but I'd rather carry a 9mm over a .380ACP.
And FWIW, be careful about the advice you take from gun counters. I regularly scout out gun counters for new guns and ammo deals, just like everyone else here. When I hear gun counter guys talking about ammunition performance, 9 times out of 10 they have no clue what they're talking about with relation to terminal performance. The same guys that are telling guys to get .45 pistols are the same ones telling women to buy .32ACP Beretta Tomcats. They're the same ones who tell you that the .410 Taurus Judge is great for personal defense, but that you don't want to use anything less than a 12ga shotgun to protect your house. It's not everyone, but a lot fall into this category. The rest are just people who use meaningless terms like "knockdown power" and "stopping power".
Point being, do your own research before you commit to anything.