Another projo

[Shell Shifter]

There is this little shop near me that seems to have interesting things whenever I stop by.

He is a projectile, 2.3" diameter, about 8 3/8" long. It has a plug in the base with what I presume is a date: "8 - 90". The "0" did not photograph well.

Thoughts and observations welcome. BTW, still working on removing the plug. It is sorta rusty.

 

[US-Subs]

Looks like a 6pr projectile, but not sure about the plug.

 

[HAZORD]

I Have one just like it. Plug could be left-hand thread.

 

[Shell Shifter]

I'm lubeing the hell out of it. I may put it in an ultrasonic bath for a while.

 

[HAZORD]

Diesel, Kroil, good penetrating oil, or a 50/50 mixture of Dot3 brake fluid and quality acetone. My friend swears by the latter for freeing frozen firearms screws.

 

[Shell Shifter]

Got it apart. Look at the plug, it has a threaded hole that is blind. Gotta have a purpose. Thoughts?