Sorry ignore the bulk bag pic. Those are some 168 smk i have.
Good post .311 vs .308.Are you able to measure them? They could be .311 SMK for use in .303 British.
so are you saying these bullets are for a .303 brit?Sir, it is NOT a notion, the .303 British IS a 174gr bullet. Period.
In 1957, when the US adopted the 7.62x51 cartridge, followed closely by the rest of NATO, the bullet weighed 147gr. Special requirements for a longer range cartridge for sniping and 'special applications' led to the development of the M118 bullet - read -
Specialized loadings were created for 7.62×51mm NATO-chambered sniper rifles. They used heavier and more streamlined bullets that had a higher ballistic coefficient than standard ball rounds, meaning they shed velocity at longer ranges more gradually. Loss of velocity is important for accurate long-range shots because dropping from supersonic to transonic speeds disturbs the flight of the bullet and adversely affects accuracy. The standard M80 ball round weighs 147 gr and has a muzzle velocity 200 ft/s (61 m/s) faster than the M118LR 175 gr sniping round. However, the M80 drops to subsonic velocity around 900 m (980 yd), while the initially slower M118LR is supersonic out to 1,000 m (1,100 yd) due to its low-drag bullet.