left to right 30-03, 30-06, 30M1 and first year of 30M2
when the 30M2 was introduced in the late 1930's the bullets had a stannic
stain for I.D. this was eliminated by 1940
when the 30M2 was introduced in the late 1930's the bullets had a stannic
stain for I.D. this was eliminated by 1940
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