Are there any other changes to the new target aside from a 4" circle inside the head?
If that's the only thing, then for now, use an old target and make a little jig to cut in a 4" perforated circle. That's what I'm thinking of doing.
.... We used a 5" circular hole cutter. We intend to center it and then just press in the perforations....
The hole saw is a good idea. Although I'd use a 4" one.Just cut a piece of plywood the exact size of the head, with the 4" hole in the right place. Lay down the wood, press the hole saw in the hole to the cardboard....done. Easy.




























