Thundermug.

[oyvind]

Thundermug It has an inside diameter 50mm 240mm length.
Thundermug barrel wall thickness 37mm off A633gr.ST52 Built from a solid.

And sekend one have inside diameter 38mm and 200mm length and barrel wall thiknes 30mm.


How much black povder (fg powder) for safe firing.
600-700 grains?


Mvh

Oyvind

 

[Theodore]

How old is the gun?
How heavy is the projectile?
What is the "windage"(bore diameter minus(-) shell diameter?
Who made the powder?

 

[oyvind]

How old is the gun?
How heavy is the projectile?
What is the "windage"(bore diameter minus(-) shell diameter?
Who made the powder?

Gun is new and made from solid steel.
No projectile,only salut.
128mm autside and 50mm bore diameter
sekend one have 99mm autside and 38mm bore.
Nobel Fg or FFG

Mvh