All things being the same, the thicker case (smaller capacity) will generate a higher pressure. In turn, reloaders should consult their Reloader’s Guide and adjust their powder loads according to the specific calibers of the rifles they will be fired from. 308 case cartridge, it follows that the powder capacity of the 7.62 is lower than the. Additionally, the case cartridges must withstand the rigors associated with automatic weapons.īrass Thickness: Because the 7.62 case cartridge has thicker walls, yet has the same external dimension of the. across multiple platforms (the thicker brass is better able to stretch and accommodate these chamber variations). This design feature is to accommodate NATO specifications, which include varying chambers specs. In general, military brass is thicker than commercial brass. Barrel chamber length for the different cartridges.The difference between the two, beyond the outside dimensions, is basically two-fold:
In fact, the 7.62 was developed using the general design of the. 308 Winchester cartridge case and the 7.62 NATO (7.62 x 51 mm) are the same thing. From an external dimension standpoint, the.
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