Quote:
Originally Posted by rsilvers
What are we asking?
Who was the first person to take 5.56mm brass, cut it down, and open it to 30 cal?
1969 for the Air Force's Colt IMP project - though it was 30mm case length so that with the bullet they wanted it would fit into a 221 Fireball sized gun.
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Well as in the 1.355 ish case and using a .308 pill is what we are asking.