That site you had noted prior- with the 10 bores, one by WC Scott - very nice and around or under $4,000 cdn.
; I should add to this, that any of the better sahpe 10 bores could easily be turned into "Jungle Guns" by merely shortening the barrels and installing sights. Properly loaded, a smooth bore is amazingly accurate, if my 12 double was any indication. I felt it quite capable of deer shooting out to 100 yards, and had more than enough power for moose, elk and big bears.
; I used smokeless-for-black loads as they kicked less than 1/2 of what the BP loads provided. Greener's book showed 2 19th century loads for the 12 bore - a light 4-1/4 dram load and a heavy 7 dram load, both with spherical balls. My smokeless duplication loads matched the heavier 7 dram load, but with less than 10,000LUP breech pressure. The BP load kicked like H$ll in the light 7-1/2 to 8 pound gun.
: A 10 bore "jungle Gun' would make a very formidable 'brush-gun' and would handle shot as well as ball. With the wonderful wads available today, and hard shot as well, one can almost achieve modified patterns from a cylinder bore - one need only 'experiment' and properly pattern one's gun. There are many 'tricks' in developing tight patterning cylinder bores. My bro's 'new' Manton 14 bore cap lock scatte gun is a case in point. We got it shooting 85% at 26 yards with only 1 ounce of shot. This makes it a 35 to 40 yard duck gun, quite easily, something most cylinder bores aren't good at. Of course, a slightly modified load shoots normal open choked patterns. Same can be done with any cylinder bored gun with shot.
: The trouble with down-loading or squib-loading a big bore is the tremendous trajectory you end up with. It is not fun shooting a gun that requires several feet of elevation to hit at 100 yards, after getting a 25 yard zero. You don't have to drop the powder charges much to lose a great deal of veloicty. With shot, you get similar extremes of trajctory and no killing power. I believe it best to use a gun that can be used as intended so it delivers it's 'best' performance.