Thread: Rifled Shotguns

The shape of the slug and its size have a big influence on long range accuracy. All the slugs Ive measured are under bore diameter about 13 gauge so as to get out a choked barrel I guess without getting stuck and "sort of bullet shaped ie longer than they are wide which without spin means they will get a wobble on. A twist of 1 turn in 70 to 80 would be sufficent, and the old paradox guns had the last inch or so of the barrel rifled like this.
However the most accurate slug is a good old fashioned round ball paper patched and sat on the upturned base of a plastic wad fired from a cylinder bore. Basically a cartridge loaded brown bess. You have to roll your own but with the price of slugs its a no brainer if you shoot lots.