Myths, alliances and what appeared to have worked once at one place with some man, rate handgun cartridges. The thing is that the maximum range of the terminal performance is restricted and the restrictions appear quickly when a bullet is forced to penetrate the thick clothes, strike the bone or even enter essential organs because of an inaccurate angle.
The other yardstick that is still used within the industry is the 12 to 18 inches in ballistic gelatin guideline of FBI. It is not a magic number but it keeps the discussion confined to the real need, that is, depth first, and then such extension as the need will accept without its loss. It is not a historical point or nostalgic match that ensues. It is a capability test- oriented on handgun rounds that tend to appear on the subject of it will do, but tend to provide too narrow a margin of error where consistency is required.
1. .22 Short
The fact that Short has not been killed yet is because it can easily be shot, it can be shot without making a sound when compared with the center fire and it is even embedded in the rimfire culture. It could be used in close-range pests and casual range time.
The case size and light bullet mass are the limit of its maximum since it is a defensive cartridge. The penetration is the most common site of failure, especially in the instances of clothing, bone, or oblique angle being in question. Perfect placement is less admonition than a requirement in situations where a round has limited penetration into vital organs, necessities are not likely to pass the necessity test.
2. .25 ACP
The John Browning.25 ACP was made to ignite centerfire in very small pistols and the perk does work: in most examples, it does not have the rimfire misfire connotation that follows behind.22 handguns. It can even operate quite smoothly in pocket pistols that have been well made. Reliability centerfire is not the solution to the larger problem, though.
Even when following bullets forms that are penetration-prone, loads in the pocket-caliber gel type often cannot reach distances further than 11 inches on a regular basis. The very low degree of velocity and low weight of the bullet combine the defensive power of the round that is fixed between the low level of speed and low weight of the bullet and has little opportunities to travel far in the case of a hindrance on the path.
3. .32 S&W (Original)
This is an older.32 S&W of a more primitive period of small revolvers and low-pressure bullets, and it is still in service today in old guns which were never meant to reach modern terminal-performance requirements. It is not its secret that it has a problem, but math. It has low velocities and light-for-caliber bullets, and this fact implies that it under-delivers even when passing through intermediate barriers and generates less wound mechanics than more modern defensive cartridges.
Even the family tree itself, later cartridges (.32 S&W Long, .32 H&R Magnum, .327 Federal Magnum) even are difficult to comprehend what added speed and pressure can accomplish- turning the original model into something that can only be recommended to the collector or occasional range use.
4. .410 Bore From a Handgun
410 handgun-sized platforms sell on utility and a non-appealing muzzle trait, but the mechanics of the cargo cannot be overcome. Buckshot that is shot out of short barrels can penetrate acceptably in hypothetical cases, but in practice the penetration becomes steadily smaller as soon as a heavy layer of clothing is introduced into the experiment, and the lighter loads of birdshot are merely a surface skimming affair.
Slugs can be used to magnify the single-projectile stakes, but short-barrel stability and consistency is common in the majority of loadings. What is even worse is that the spread term is not the same one as the effect term. The shot has a greater chance of success with various projectiles, but each pellet has a definite supply of energy, and the distribution is not consistently compensating at defensive ranges in regards to shallow penetration.
5. .22 LR (From Handguns)
22 Lr is ubiquitous and can be used in small game-mostly in longer barrels. In handguns it becomes more likely to enter into defensive discourse since there is little recoil and the capacity can be large. The two possible failure modes that can be predicted are ignition and reach. Rimfire is never as reliable as centerfire, and short barrels can be shaved to the extent that they are not reliable in terms of penetration.
Handgun barrel gel testing has shown the degree of velocity change that can be achieved solely by change of barrel length, and including have reported jumps of up to 126 fps between longer and shorter test barrels of the -22 LR. The added pace will not invariably result in growth and where it happens, the penny is typically repaid with penetration.
6. .380 ACP With FMJ
The limit of 380 ACP is nearly the accepted threshold of the defensive cartridge and it actually functions when the load is the same as the firearm and performance is known. The common concession here is to withdraw to FMJ and feed and pierce, especially in small pistols. One of the products of that shortcut is the trade. FMJ will readily penetrate the soft tissue but will not achieve the larger crush cavity that controlled expansion is expected to provide but might also fail to provide the optimum depth depending on the velocity, impact angle, and the initial object it hits.
Meanwhile the manufacturers have been experimenting with loading. 380 JHP in such a way that it can be brought to close to the same penetration levels as with duty ammunition and the performance envelope in caliber is so small that it is difficult to bring caliber into spec. Nobody is in .380 who does not start the meal with the bullets.
7. .45 GAP
45 GAP was designed to provide 45-caliber performance in a smaller size to enable smaller frames to not have the bulk of grips of some 45 ACP pistols. It is dimensionally meaningfully shorter, being 0.755-inch case length compared to 0.898 inches with.45 ACP. It also maintains its performance in the same neighborhood by operating at higher ceiling, with a maximum pressure of 23000 psi compared to 21000 psi of the standard .45 ACP.
At that point, precisely the problem is those similarities: .45 GAP fails to provide practicable ballistic benefit that can compensate its slimmer ecosystem. Having limited numbers of firearms chambered in it and limited numbers of defensive load selections in circulation, it falls more of a logistics cartridge than a performance cartridge, one where the shooter has to take scarcity and receive nothing measurable in terms of performance in return.
No cartridge can come with guarantees and the location of shots will never be irrelevant. The amount of tolerability of a handgun setup to minimum performance is determined by the type of cartridge chosen. To be used defensively, the common theme in these seven is not the fact that they are incapable of being used as lethal. It is because they so frequently do not produce repeatable penetration–and repetitiveness is what makes a caliber simply a possibility into a tool.
