- May 10, 2017
- Detector(s) used
- Whites, Fisher, Garrett, and Falcon.
- Primary Interest:
With say 21" of barrel containing the energy before going into the hole in the rock there will be more powder burned thus more energy to break the rock open. I will be using a 24" barrel with about 21" of barrel after the shell / load. This will be better then a 1 1/2" hole in the rock.There is still the receiver / action sticking out of the ground.
Why not have the entire cannon sticking out of the ground and just fill the hole with water.
There is no problem with 12 gauge shells as they have been used for at least 200 years or so.