i just got finished with my high tech homemade target, took some old work clothes such as a couple flanel jackets, jogging pants and cotton t-shirts. filled up a pillow case and sat on it to compress it and zip tied it closed.
even at 5 yards the bolts only go in halfway and pull out very very easily. im getting a couple feed sacks to put the stuff into and more clothes to make it bigger for long range practise.
saved myself $40 or more