SpudFiles

to make relatively lightweight, penetrating slugs, get a 1 1/2 inch to 1/2 or 3/4 inch reducer, then screw in a nipple, preferably 6" to 12" long. oh, It fits in a 2" barrel

click to enlarge. and read the whole thing.

Wouldn't it be a better idea to put a sabot around the long pipe and lauch it pipe first? Like a dart or a sabot round for a challanger 2 tank?

I don't see why you want to lauch the back first Good idea though. You should put an end cap on the free end so it can do more damage. Are you going to use this design for the swat gun?

yes, I already do. the reason you would wast to shoot the back first is so the ammo turns sideways, contacting and therefore damaging more surface area.

Quick question. are you using a threaded pipe nipple to get it to spin slightly?

The threads won't make it spin, they're far too steep and shallow to make any noticable difference.

Then why not just use a piece of pipe instead of a threaded nipple? Oh! I get it. He uses a nipple cause then you don't have to weld! Gall I'm a dip.

those types of ammo work excelent i have a few darts like that, i cut the circles out with a holesaw (find a size that works with your barrel) then ran a threaded rod through the middle hole and put a one inch dowel on the back about 6 inches long. on the front i put the same dowel but i sharpened it so it can stick in things easier.the front only sticks out about an inch and a half, and i used 3/4 inch plywood for the discs. it works best with the disk in the front because then it pulls the dart from the front and flies straight instead of pushing from the back, when you do it tis way the darts tumbleand fly crooked.