-from today's "Ouch, But I'm Sure It Only Looks Painful" Department:
Here's a youtube clip of several different guys firing a 577 Tyrannosaur rifle at an indoor range.
The 577 T-Rex is one of the hardest-kicking rifles around ... about like having a 160-lb weight free-fall into your shoulder ... and most of the "victims" appear to have no idea what's in store.
Enjoy :-)