I haven't gotten a chance to fully range check this as I live in a relatively populated area. I'll try to update if I can get a chance to test it. I shot a few things with it like card board boxes and foam targets. It works ok. One thing to note is that if the .50 caliber rounds didn't pierce the target (too low of a pressure or odd angle), it had a bad ricochet. The arrow on the other hand worked like a charm every time :)
The good thing about this is that it is scalable. I'm sure a larger version would work much batter but you need to lay down some more money for that. Overall I'm pleased with it. Any questions or comments, please let me know. This was my first instructable so I'm hoping to do more in the future.