Very ingenious. I love it. Especially the wind indicator. (Great idea) What do you use as a backstop inside the box? Im starting to make something similar (not as nice as yours) out of an old 1/4 beer keg. Need ideas on how to keep it quiet. Great job. I wish i could weld!!
It is quiet but heavy. Behind the cardboard is 9" of rubber mulch. I enjoy making stuff. Next I think I will make some different knock down targets to put in it.