10 gauge double barrel shooting round ball is one gun I also want to make!

I have a 12 gauge double smoothie with 23 inch barrels and express rifle sights. I load and shoot .720 diameter lead round balls. Very accurate out to 50 yards. I listened to Daryl and load up powder, card wad, then place an upside down and cut up shot cup, and then the round ball. Then do a roll crimp using a drill press.

I've also made up a little 410 double into a slug gun. I cut the barrels down to 18 and 1/2 inches and put a big bead site on the front and v site on the back. The left barrel is dead on with factory 3 inch slugs, the right barrel does cross quite a bit. But I just always shoot the left first then adjust. With training I can put both round balls into nearly the same hole at 25 yards.

But when I find the right gun, I will take a double 10 gauge, cut the barrels to about 20 inches and install express sites on it. That is one of my dream guns for sure. With pure lead round ball those projectiles will come in at about 700 GRAINS EACH. That is alot of lead to toss at a pig or Moose.