Picked up a few of these .50" BMG drill rounds the other day which are identical to the ones in TonyEs site apart from from only having two circumferential body grooves (Tony’s example has three) https://sites.google.com/site/britmilammo/-50-inch-browning/-50-inch-browning-drill-and-inspection
Does anyone have any information as to why my examples only has the two gooves? different L No for them ect?
Tony