M118LR
Master
If using 175 SMK (M118LR) best round for 1K shooting with a .308 Win/7.62 x 51, then a barrel length of at least 22 inches would be recommended.
OBTW: USMC M40: https://en.wikipedia.org/wiki/M40_rifle
And while we are on the 7.62 x 51/ .308 Win lets not forget the Navies M14NM or the M21: https://en.wikipedia.org/wiki/M21_Sniper_Weapon_System
Thus the 22 inch min barrel that the M118LR was designed to maximize.
OBTW: USMC M40: https://en.wikipedia.org/wiki/M40_rifle
And while we are on the 7.62 x 51/ .308 Win lets not forget the Navies M14NM or the M21: https://en.wikipedia.org/wiki/M21_Sniper_Weapon_System
Thus the 22 inch min barrel that the M118LR was designed to maximize.
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