Quote:
Originally Posted by Vespers War
I believe there were only three different weapons tested. Two of the four were the M32 76mm, one with the M76 recoil system (from the M41) and the other using an adapted M81E12 recoil system (from the M551).
Assuming the XM180 uses the same ammunition as the M101 howitzer, the M327 HESH/HEP round would be available, with an 80% chance of spalling 5 inches of armor at 60 degrees obliquity. If any M67 HEAT was still around, it would also be usable, but IIRC it was replaced by the M327 pretty quickly in the late 50s.
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Yeah, the 76mm was tested twice; once with it's own recoil system and once with the M81 recoil system.