Anybody out there make there own targets for sighting in a gun. A friend of mine got a new muzzle loader last year and we were thinking about trying to make our own targets that can be seen without a spotting scope. We use the shoot n see's but they are pretty small for a new gun that is not dialed in. We were thinking about getting a large sheet of green poster board and then spray painting it black. Any ideas on something that is visible from 100 yards and is big enough to see without a spotting scope.