Any ideas on this barrel?

[NugginFutz]

For every ridiculous instruction, there is rationale.

You know, that really does send shivers up my spine. To clarify, though, when I suggested a look up the snout would suffice, below is what I remembered thinking of, at the time.

[explorecaves]

LOL - just was trying to help prevent any ID10T errors...

[ixslr8]

i count 6 grooves