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  2. Teflon-coated bullet - Wikipedia

    en.wikipedia.org/wiki/Teflon-coated_bullet

    North Carolina state law specifically forbids persons in that state to "import, manufacture, possess, store, transport, sell, offer to sell, purchase, offer to purchase, deliver or give to another, or acquire any Teflon-coated bullet". [9] Oklahoma – Teflon-coated bullets are illegal in Oklahoma under some circumstances. [10]

  3. Coupon - Wikipedia

    en.wikipedia.org/wiki/Coupon

    Grocery coupons come in two major types: store coupons: issued by the store itself. Some stores will also accept store coupons issued by competitors. Coupons issued by the manufacturer of a product [1] may be used at any coupon-accepting store that carries that product. Part of their function is to advertise their offerings and attract new ...

  4. Overpressure ammunition - Wikipedia

    en.wikipedia.org/wiki/Overpressure_ammunition

    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.

  5. 20 mm caliber - Wikipedia

    en.wikipedia.org/wiki/20_mm_caliber

    20 mm caliber is a specific size of popular autocannon ammunition. The dividing line between smaller-caliber weapons, commonly called " guns ", from larger-caliber " cannons " (e.g. machine gun vs. autocannon ), is conventionally taken to be the 20 mm round, the smallest caliber of autocannon.

  6. .25-20 Winchester - Wikipedia

    en.wikipedia.org/wiki/.25-20_Winchester

    The .25-20 Winchester / 6.6x33mmR, or WCF (Winchester center fire), intermediate cartridge was developed around 1895 for the Winchester Model 1892 lever action rifle. It was based on necking down the .32-20 Winchester. In the early 20th century, it was a popular small game and varmint round, developing around 1,460 ft/s with 86-grain bullets ...

  7. .500 S&W Magnum - Wikipedia

    en.wikipedia.org/wiki/.500_S&W_Magnum

    However, most factory ammunition is limited to 50,000 psi (3,400 bar) to help ease extraction of fired cases. The cylinders of the S&W Model 500 revolver are engineered to be capable of withstanding 50% over pressure. Regular proof-load testing is performed at 20% over pressure. [3] The cylinder bore diameter is given as .500 in (12.7 mm).