Hornady Frontier M80 149gr FMJ 7.62x51 NATO

Hornady Frontier M80 149gr FMJ is the training ammunition most .308 semi-auto owners should be shooting. Hornady loads this line using surplus Lake City brass and M80 ball projectiles, running to 7.62x51 NATO pressure specification rather than the hotter commercial .308 Winchester spec. The difference matters more than most shooters realize. Many semi-auto .308 platforms, particularly the M14/M1A, some FAL variants, and older AR-10 patterns, were designed around NATO pressure and can experience accelerated op-rod or bolt-carrier wear when fed steady diets of commercial .308 hunting or match loads running at 60,000 PSI.

Frontier M80 runs at approximately 50,000 PSI, the NATO specification. Muzzle velocity is 2,780 fps from a 24-inch barrel with 2,569 ft-lbs of energy, essentially identical to standard M80 ball specifications. The 149gr FMJ projectile is boat-tailed with a G1 BC of 0.370, adequate for 600-yard qualification shooting and ringing steel at typical carbine distances. Accuracy is not match-grade but runs 2-3 MOA from quality rifles, which is standard ball ammo territory and exactly what you want for high-volume training.

The case for Frontier over generic commercial .308 FMJ comes down to rifle longevity and feed reliability. Semi-auto .308 rifles tuned to NATO spec cycle M80-pattern ammunition more smoothly than heavier or hotter commercial loads, and the Lake City brass is consistent and reloadable. At $1.00-1.40 per round it costs slightly more than the cheapest commercial FMJ options but meaningfully less than any premium or match load. For M1A, SCAR 17, AR-10, and FAL owners, this is the default range ammo. For bolt-action .308 shooters, any commercial FMJ works, save the money.