308 Winchester and 7 62×51 Nato Ammunition
308 Winchester and 7.62×51 Nato Ammunition
Our first first rule of thumb when buying ammunition for our AR-10 and 308 AR rifles is do not buy any ammunition named after an animal.
7.62 NATO versus .308 Winchester
Commercial .308 Winchester ammunition came first. The two ammunition types ended up differently.
Similar to the 5.56 NATO versus .223 Remington comparison, the difference between .308 Winchester and 7.62 NATO is in the chamber, but it’s in a different location.
The difference between these two calibers isn’t the throat; it’s the headspace. NATO is substantially longer.
Although there are different pressure-testing standards used by NATO and SAAMI, commercial .308 Winchester ammunition is loaded to a maximum higher-pressure than mil-spec NATO.
It’s safe to shoot NATO rounds in a .308 Winchester chamber, and .308 commercial ammo in a NATO chamber.
The difference is in what comes back out. The cartridge case for either caliber will be stressed. The softer, thinner commercial case might be deformed.
As for numbers, SAAMI spec headspace for a .308 Win. is a minimum (shortest allowable or “GO” figure) of 1.6300 inches, and a “reject” (too long) figure of 1.6340. Well, the number given as a minimum for NATO is 1.6380. The “reject” on NATO is 1.6455.
It’s also the reason NATO cartridge case specs call for considerably thicker-walled brass and associated hard alloy. It has to endure that much more expansion. It’s a big reason not to purchase “surplus” 7.62 brass for reloading. That’s the standard advice in the reloading community. Cases fired through an actual NATO chamber will be patently worthless to anyone owning a .308 Winchester chambered firearm. They will be blown beyond all reasonable use.
If you are a handloader for a firearm with a 7.62 NATO chamber, get a cartridge case headspace gauge and subtract 0.004 inches from the spent case reading to use as a figure to set your sizing die (case shoulder set-back). So, be sure not to take it down to .308 Winchester specifications, or it’s liable to break on the next use. Actually, break.
The 7.62×51 is the most commonly used rifle cartridges in the United States. PPU manufactures all calibers using the highest grade materials and quality production control, ensuring precision performance along with proper feeding in bolt action and semi-automatic rifles.
Gorilla Ammunition 168gr Sierra MatchKing .308 Winchester Match Ammunition utilizes only the highest quality components to manufacture top-quality match-grade loads and this round, chambered in .308 Winchester with the 168gr Sierra MatchKing is no exception.
Federal Gold Medal Match 308 Ammunition – Federal Gold Medal Match Ammunition is the quality and consistency of the finest handloads. When you want the most accurate 308 round for Military, Law Enforcement and Competition the two Federal offerings are a safe bet you can count on from shot to shot.
Cheap 223 AR15 Ammo Nosler – Nosler Match Grade Ammunition consists of Nosler’s precisely-designed Custom Competition bullet along with Nosler brass. Because of Nosler’s unsurpassed quality standards, each piece of brass is checked for correct length, neck-sized, chamfered, trued and flash holes are checked for proper alignment. To further ensure our reputation for quality and consistency, powder charges are meticulously weighed and finished rounds are visually inspected and polished. Manufactured to Nosler’s strict quality standards, Match Grade ammunition uses Nosler brass and Nosler bullets to attain optimum performance.