My shooting buddie and I have been makeing our own shooting targets for years.Our range only goes to 300yds and at 300 is where we use them.
You can use them over and over,just put clear tape over the bullet holes and re=spray with flat black paint.You can see in the target below that you can just spray over the bullet holes without putting tape over them also.
I take a piece of cardboard that has a white face on it and go over it with clear shipping tape,then spray with flat black paint.