How Far Away are Blanks Dangerous?

How far away from a blank do you need to be for it to hurt? In this video I test it out.

Ebay Store: https://www.ebay.com/usr/duraace_di-2
-I am working on a website, but it won't be up any time soon.

This video is intended for educational purposes only. Any attempt at re-preforming any act in this video is at your own risk. All work on arms (AND AMMUNITION) should be carried out by a licensed individual and all state and federal rules apply to such. Nothing in this video is considered legal advice, please consult your attorney for legal advice. We (including YouTube) will not be held liable for any injury to yourself or damage to your arms resulting from attempting anything shown in any of our videos. Updated eBay Store Link: https://www.ebay.com/usr/the_larkins_lair