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The VPAM scale as of 2009 runs from 1 to 14, with 1-5 being soft armor, and 6-14 being hard armor. [1] Tested armor must withstand three hits, spaced 120 mm (4.7 inches) apart, of the designated test threat with no more than 25 mm (0.98 inches) of back-face deformation in order to pass.
The .30 Herrett produces higher velocities with less powder than the larger .30-30 case in the short 10- and 14-in (25- and 35-cm) Contender barrels. Other examples are the .357 Herrett, developed to handle heavier bullets and larger game than the .30 Herrett, and the 7 mm International Rimmed, a popular metallic silhouette cartridge. Bullberry ...
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.
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]
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).
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 .30-30 Winchester is typically limited to short ranges, primarily because of the relatively small case capacity and the 150-grain and 170-grain bullet weights. To compensate for this, Waters necked the cartridge down to use a 7 mm bullet (.284 inches), rather than the original .308 caliber (7.62 mm) bullet.
For projectiles in unpowered flight, its velocity is highest at leaving the muzzle and drops off steadily because of air resistance.Projectiles traveling less than the speed of sound (about 340 m/s (1,100 ft/s) in dry air at sea level) are subsonic, while those traveling faster are supersonic and thus can travel a substantial distance and even hit a target before a nearby observer hears the ...