3mm BALL EXPERIMENTAL

This was a continuation of the 3mm microballistic development at Frankford Arsenal during 1962 – 1963 and used the 222 Remington Magnum case necked to 3mm. bullet was a solid copper alloy with a 10 caliber ogive and case has the rippled shoulder. It is not clear if this was as a result of the necking down process of intentionally done.