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The .308 Winchester is a smokeless powder rimless bottlenecked rifle cartridge widely used for hunting, target shooting, police, military, and personal protection applications globally. It is similar, but not identical, to the 7.62×51mm NATO cartridge.
27 gru 2014 · Cutting the barrel from 28″ to 16.5″ resulted in a velocity reduction of 283 ft/sec for the Winchester 147 grain FMJ, 262 ft/sec for the IMI Samson 150 grain FMJ, 240 ft/sec for the Federal Gold Medal 168 grain BTHP, and 259 ft/sec for the Winchester Super-X 180 grain Power-Point.
18 lis 2023 · There are some differences in dimensions between .308 Winchester and 7.62×51mm NATO cartridges. The diameter of a cartridge is important for gun compatibility. The diameter of a .308 Winchester cartridge is 0.308 inches (7.8232 millimeters).
Sporting .308 ammunition is made to the same sized outside dimensions as 7.62 NATO ammunition but lacks the thickness of brass to flow and fill a loose military chamber with the possibility of split or ruptured cases as a result.
22 sty 2024 · SAAMI diagrams show a headspace measure of 1.630 to 1.640 for the .308. A Frankfurt Arsenal diagram indicates a range of 1.628 to 1.634 for the 7.62×51 NATO cartridge case, while JGS reamers are held to 1.630-.640 for the .308 and 7.62×51 NATO.
30 mar 2021 · Contrary to the popular urban legend, 7.62 NATO casings do indeed have thicker walls than .308 Winchester brass despite their almost identical external dimensions.
14 wrz 2024 · 7.62x51mm is a NATO cartridge, with a maximum chamber pressure rating of 415 megapascals–that’s a tad over 60,000 PSI. .308 Winchester, on the other hand, is rated slightly higher, with a maximum SAAMI spec of 62,000 PSI.
