The pincover dart cones fit perfect in the .625 id 1\2 inch pvc pipe. The brass tube dart tips work great and are fairly easy to make. And the mouthpiece is a 1 1\2 inch black rubber chair leg tip , with a 7\8 inch hole punched . It slides on snug and feels good around your mouth no sharp plastic.. Thanks guys for the intrest.
Thanks pelletor i have been experimenting with differnt designs to see what works best for me. So i only make a couple test darts to try at a time. Then play with the design and tweek them to my liking.