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The .30 caliber (7.62 mm) armor-piercing bullet on the right has a copper jacket enclosing a hardened penetrator, but externally resembles the other four lead-core bullets. Armor-piercing bullets for rifle and handgun cartridges are designed to penetrate ballistic armor and protective shields intended to stop or deflect conventional bullets.
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.
The 7.62×39mm (also called 7.62 Soviet, formerly .30 Russian Short) [5] round is a rimless bottlenecked intermediate cartridge of Soviet origin. The cartridge is widely used due to the global proliferation of the AK-47 rifle and related Kalashnikov-pattern rifles, the SKS semi-automatic rifle, and the RPD/RPK light machine guns.
The maximum average pressure rating for this cartridge is 52,000 psi (360 MPa). [7] Among the first pistols chambered in .30 Super Carry were the Smith & Wesson Shield EZ 30 SC and the Shield Plus 30 SC. [8] In May 2023, Hi-Point released the Hi-Point 3095 carbine chambered in .30 SC. [9]
A typical .30-30 factory load fires a 150-grain bullet at 2390 ft/s, while the current 7-30 factory load fires a 120-grain bullet at 2700 ft/s. Muzzle energy is just over 1900 ft-lbs for both of these loads, but the lighter weight 7 mm bullet has a higher velocity and flatter trajectory.
Compared to standard intermediate cartridges, one can carry more 4.6×30mm ammunition due to the cartridge's lower weight and relatively small dimensions. Also, due to the lower weight of the bullet, aiming in rapid fire is much easier as recoil depends much on the weight of the bullet.
Frangible bullets may be lighter or longer than conventional bullets of the same calibre. The jacketed frangible bullet in the centre is longer than the outer soft-point bullets with traditional lead cores. Each of the three .30 calibre (7.62 mm) bullets weighs 150 grains (9.7 g) but the lower density frangible core requires greater volume.
In the open division, IPSC has a lower power factor requirement of 160 kgr·ft/s for major, while the other IPSC handgun divisions require a power factor of 170 kgr·ft/s for major. Open and revolver are also the only divisions that allows major scoring with a 9 mm bullet diameter (the other handgun divisions require a 10 mm bullet diameter).