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A Drill round that has a full calibre driving band will stick in the bore every time....and as such it would show engraving marks....which this one does not. So, it was either never used or it is not a Drill round. Drill rounds are supposed to have the driving band machined flat or removed, to ensure non fouling of the rifling. All the Drill rounds I have seen are like that...except for all those 105mm How quasi Drill rounds that were everywhere a few years ago. They were just excess HE projectiles that had been repainted as "Drill" for a quick sale to us plebs.
A Drill round that has a full calibre driving band will stick in the bore every time....and as such it would show engraving marks....which this one does not. So, it was either never used or it is not a Drill round. Drill rounds are supposed to have the driving band machined flat or removed, to ensure non fouling of the rifling. All the Drill rounds I have seen are like that...except for all those 105mm How quasi Drill rounds that were everywhere a few years ago. They were just excess HE projectiles that had been repainted as "Drill" for a quick sale to us plebs.
Thank you for the info Minen. I can only assume that when conducting loading drill, the shell was not fully rammed, otherwise the band would foul the rifling and slow down the entire process. We learn every day.
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