According to some cursory searching and Wikipedia referencing (so take the credibility at your own peril), axe guns were primarily thought of as axes, and the firearm part was secondary.
The Swedish navy issued axe gun has a more practical profile than the ornate gun in the OP, if that gives an idea how such an idea might be practical.
Oh, got it. Assumed the whole length was a barrel.
Shit, with the barrel that short I think the hatchet is the better bet
According to some cursory searching and Wikipedia referencing (so take the credibility at your own peril), axe guns were primarily thought of as axes, and the firearm part was secondary.
The Swedish navy issued axe gun has a more practical profile than the ornate gun in the OP, if that gives an idea how such an idea might be practical.
Bullpup shotaxe