I use flipchart paper from the office supply store with 1" squares. Get a clay target hold it in the middle, draw round with a black marker, to sight on and shoot. Now you have a permanent record if you wish. I shot a Remington 1100 12ga
with a Polychoke,using a separate shot and paper for each choke setting, now I can prove to my friends that the device really works
Stapled to a wood frame, I also use it for rifle and pistol shooting on my range here on the farm.
Otherwise, steel plate and grease, plywood, as someone pointed out, splinters.
Mike
