I believe that blanket guns, canoe guns, blunderbusses, and sawed off double guns, are all one hit wonders that are not at all versital, and don't do much of anything really well.They are a great project if you just have money to waste on guns that serve little purpose, other than getting pilgrims to say oh wow. JMO. My 30" barreled trade guns loaded easily in my canoe, and performed as well as most longer trade guns, and fowlers.
Hungry Horse