In the pursuit of wound potential, sometimes called stopping power, there have traditionally been two alternatives. The first, and most reliable, was to increase bullet diameter and weight. Examples include replacing the .36 Colt with the .44 Army revolver and the later invention of the .45 Colt revolver. Designed to drop not only enemy soldiers and aboriginal tribesmen, these firearms could drop warhorses as well. A high point in design came with the 1911 .45 automatic pistol, combining a self-loading action with a big bore cartridge. At about the same time, high velocity was used to increase penetration and wound potential. With the increasing use of heavy web gear by soldiers, the high-velocity 9mm Luger, with its great penetration, was deemed desirable. The greatest of the high-velocity cartridges—a sensation when introduced—was the .357 Magnum. There was nothing wrong with the .45 ACP’s wound potential, but the .38 ACP Super was introduced to give improved penetration against felons behind cover and in vehicles.
Today another means of increasing wound potential exists: this is expanding bullet technology. Essentially, a bullet that expands or upsets to 1.5x its beginning diameter to improve wound ballistics by creating a larger wound channel. By decreasing the standard bullet weight, from 158 to 129 grains in the .38 Special or from 230 to 185 grains in the .45 ACP, we are also able to increase velocity at the same pressure level. A lighter bullet may be driven faster. Pressure from burning powder gas is what drives the bullet and we have a fairly narrow band of pressure to work with. This is important because handguns are not all that powerful. Compared to the 12-gauge shotgun or .223 rifle, the weak .38 and strong .45 are more alike than they differ.
Another means of increasing wound potential is to load the cartridge with a powder producing greater driving pressure. A little confusion exists concerning these loads. Designed to give handgun cartridges a step up in power and energy by increasing velocity, +P ammunition is not more dangerous. It simply is loaded to greater pressure. Wear and tear theoretically increases. One industry source likened a steady diet of +P loads to driving the family sedan over a bumpy road at 100 MPH for 100 miles.
These loads do not crack slides or cause blown guns. Wear is accelerated on small parts in revolvers and slides may be battered in self loaders—unless you use heavy-duty recoil springs. You need not use this steady diet of heavy loads. Practice with standard loads, proof the pistol with a box of the +P loads to ensure function and familiarize yourself with the product, then, go into the dark night.
NOTE: Check the owner’s manual to ensure the gun is rated for +P loads; certain pocket pistols or vintage guns may not be designed to handle the increased pressure. After all, +P loads have existed for some time.
Once labeled Super X, High Speed or Rifle Only loads, we knew what they were. Some handgun calibers need +P loads more than others. As an example, the original .38 Special revolver cartridge is a fairly sedate number that lets a 158-grain round nose bullet out of the barrel at an advertised 850 fps that is closer to 750 fps in a 2-inch barrel. The majority of .38 Special defense revolvers these days are snub nose revolvers. The standard load is safe in a 1930s era Spanish revolver made in the Basque region of notoriously soft steel; it has to be. But for your modern Taurus, Smith & Wesson or Ruger revolver, a heavier load is perfectly safe.
The Federal Hydra-Shok
The Federal Hydra-Shok is specially designed for good performance in short barrel revolvers. In the case of the .38 Special +P, the bullet weight is 129 grains, which works out for a good balance of expansion and penetration. And that is what is important. A bullet that expands too quickly will lack penetration.
The .38 Special Hydra-Shok +P averaged 900 fps in my personal two-inch barrel Smith & Wesson. Velocity has been clocked at 875 to 921 fps in revolvers with barrels of 1 7/8 to 2 ½ inches. The bullet expands reliably, and recoil isn’t too great for a fast follow-up shot. The +P is in many ways simply an update of an older cartridge that brings it in line with the performance possible with modern handguns. As an example, GLOCK 17 handguns in police and military service have digested thousands of rounds of both +P+ and NATO specification 9mm ammunition without a problem. A 1930s vintage Hi Power might not prosper.
SAAMI, the Sporting Arms and Ammunition Manufactures Institute, uses the +P designation to identify cartridges loaded to these higher-pressure levels. In self-loaders, +P loads can produce greater slide velocity. The greater momentum may result in a faster slide action that may affect the ability of the magazine to feed. For this reason, you must proof the short slide handgun with the chosen +P loads. Short slide, compact handguns sometimes have heavy recoil springs to compensate for this situation but all do not. A short-slide handgun needs a heavier spring, but some shooters complain of extra effort needed to rack the slide. The revolver firing +P loads simply kicks more, the self loader kicks more and cycles faster.
Are +P cartridges loaded to borderline high-pressure standards? Of course not—they are not as hot as industry proof loads and they are hotter than standard loads. If you choose the .38 Special Hydra-Shok you have an accurate, clean-burning cartridge with a good record. For practice, the (AMM 334) Blazer TMJ .38 Special is an affordable practice load. Another use for the .38 Special +P is, interestingly enough, in .357 Magnum revolvers. As an example, the early records set for long-distance revolver shooting with the .357 Magnum were actually set with heavy-loaded .38 Special loads. Magnum brass, 1/10-inch longer than the .38, was difficult to find for many years.
When spelunking or when firing my Magnums at long-range, I find the Buffalo Bore .38 Special Outdoorsman load is an ideal choice. A 158 grain SWC at 1200 fps—actually a bit faster in the four-inch barrel Ruger GP 100—is a startlingly accurate loading. It would be an outstanding loading against coyote and the like. I have fired it in several long-barrel target-sighted Magnum revolvers. There is no more accurate factory load at long-range than this one. For a long shot across the canyon this .38 Special +P has what it takes. It is docile to fire in a full-size Magnum revolver, which certainly doesn’t hurt anything. The correct choice for each revolver is important!
The 9mm Luger
The 9mm definitely needs help. With FMJ loads, the ice pick-like wound isn’t impressive. The Federal 115 gr. JHP at 1180 fps is a great standard pressure loading with a good reputation for expansion and accuracy. For practice, the AMM 441 9mm Blazer is clean burning, accurate and inexpensive. I like Blazer because a lot of them on the belt are still light. The aluminum case is lighter than brass. If aluminum brass were not used in the 30mm aircraft gun, as an example, the Warthog tank buster could not get off of the ground.
This is good modern technology. However, take a look at Buffalo Bore 124 grain JHP +P+. These loads break over 1300 fps from my GLOCK 19, penetrate 14 inches or more and expand to about .80 caliber. That is impressive! I would not use it in a sub compact, but this is ideal for the GLOCK 17 or GLOCK 19 or a SIG P250 full size. The .45 ACP doesn’t need the help the small bore cartridges do.
Despite several attempts at revisionist history and junk science that abound, the .45 ACP is a good choice for personal defense. Operating pressures are low and the inherent accuracy excellent. Just the same modern technology is a good thing to have and a number of good choices make the .45 ACP even more effective. In a compact pistol, one of the most desirable loads is the Speer Gold Dot short barrel load in .45 ACP. Specially designed for a clean burn, good expansion and reliable functioning in short barrel .45 ACP handguns, this is an outstanding loading. A standard weight (230 grain) bullet at 820 fps is a recipe for reliable function.
In a steel frame pistol with a five-inch barrel, the +P .45 ACP can really shine. Check out the CorBon 165 grain JHP in .45 ACP. This loading has always proven superbly accurate in every 1911 I have fired it in. Expansion is excellent. The bullet doesn’t fragment but stays together and drives home. Velocity is well over 1050 fps in most handguns. In my Les Baer Monolith, this loading has averaged a five-shot group of about 1.25-inch at 25 yards, about all I can hold from a solid, careful braced bench rest shooting position.
The Kimber Eclipse is nearly as accurate from a rest and just as accurate in off-hand fire. This is a load that maximizes the .45 ACP not only in terminal performance but accuracy as well. You would be hard pressed to find a more accurate load. For general shooting and practice, I use what is available and inexpensive. As long as it goes bang! and is accurate enough for practice, little else matters.
However, for personal defense a high-grade loading with good case mouth seal and good primer seal is foremost. Reliability must be there. These loads have cartridge integrity, are gilt-edged accurate, and offer excellent performance. When you may be betting your life on the ammunition you are using in a worst-case scenario, these are good choices.
What is your choice for a handgun defensive round? Tell us in the comment section.