Bonnex thank you for that please forgive my not knowing but is it designed to replicate the HE/T shells characteristics in the barrel of the gun. Are they just a solid projectile for this purpose and what is the reason for it having a flat nose. Thanks Mick.
Mick,
I am not sure why the design is endorsed with "representing the HE/T shell". It may be that there was a proof projectile "representing Cannister" that was heavier. I guess it all depends on what the proof shot was designed for; proving the ordnance (barrel) or say, proving the propellant. I will see if I can find anything useful on the subject.