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Speer Gold Dot 124gr 9mm+P in SIG P226 magazines. Overpressure ammunition, commonly designated as +P or +P+ (pronounced Plus-P or Plus-P-Plus), is small arms ammunition that has been loaded to produce a higher internal pressure when fired than is standard for ammunition of its caliber (see internal ballistics), but less than the pressures generated by a proof round.
However, the longer and more powerful .357 Magnum cartridge will usually not chamber and fire in weapons rated specifically for .38 Special (e.g., all versions of the Smith & Wesson Model 10), which are not designed for the greatly increased pressure of the magnum rounds. Both .38 Special and .357 Magnum will chamber in Colt New Army revolvers ...
A magnum cartridge is a firearm cartridge with a larger case size than, or derived from, a similar cartridge of the same projectile caliber and case shoulder shape. [ clarification needed ] The term derives from the .357 Magnum , the original revolver cartridge with this designation.
The .357 Smith & Wesson Magnum, .357 S&W Magnum, .357 Magnum, or 9×33mmR (as it is known in unofficial metric designation) is a smokeless powder cartridge with a 0.357 in (9.07 mm) bullet diameter. It was created by Elmer Keith , Phillip B. Sharpe, [ 2 ] and Douglas B. Wesson [ 2 ] [ 3 ] of firearm manufacturers Smith & Wesson and Winchester .
The .357 Maximum, formally known as the .357 Remington Maximum or the .357 Max, is a super magnum handgun cartridge originally developed by Elgin Gates as the wildcat .357 SuperMag. [1] The .357 Maximum was introduced into commercial production as a joint-venture by Remington Arms Company and Ruger in 1983 as a new chambering for the Ruger ...
There is wide variation in commercial ammunition. A 180 gr (12 g) bullet fired from .357 Magnum handgun can achieve a muzzle energy of 580 ft⋅lbf (790 J). A 110 gr (7.1 g) bullet fired from the same gun might only achieve 400 ft⋅lbf (540 J) of muzzle energy, depending upon the manufacturer of the cartridge.
While a few gun writers in the 1960s criticized the .351 SL for being inadequate as a deer hunting round, and the round's power has sometimes been compared to a .357 Magnum carbine load, the .351 SL's killing power falls somewhere between the .30-30 Winchester and the .35 Remington. Townsend Whelen praised it as a "good cartridge for deer and ...
.38 caliber is a frequently used name for the caliber of firearms and firearm cartridges. The .38 is a large firearm cartridge (anything larger than .32 is considered a large caliber). [ 1 ] : 42 Before 1990, the standard sidearms of police in the United States were revolvers that fired the .38 Special cartridge, seconded by revolvers firing ...