Black Powder Mortar
Specs
-Constructed from 1-3/4" x .120 welded around 1-1/2" x .095 for a finished size of 1-3/4" OD x .215 wall x 1.31 ID
-Back plate is 1/2" cold steel
-Frame is 3/4" x .058 4130 chrome moly
-Brackets are 6061 aluminum angle
-Everything TIG welded
Known Capabilities
-Fires up to a 500 grain charge of Pyrodex RS FFG
-Shoots up to 1.25lb lead slugs (snug barrel fit)
-Will shoot a 1/2lb slug through ~13" of treated lumber
-Distance unknown as of now, projectile is immediately out of sight
Videos
1. Lead slug misses target hits woods 150yds out
2.  250grain charge. Lead slug hits target from 10yds, through 13" treated lumber
3.  375 grain charge 3/4lb lead slug 25yds
4. 280 grain charge 3/4lb lead slug 25yds 
MUST SEE        5.  425 Grain charge 1.25lb lead slug       MUST SEE
6.  The death of the cannon
Wooden carriage got destroyed by the 425g/1.25lb shot, this is the new all aluminum/steel one.
Rest in peace cannon.
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