Quote Originally Posted by richierich View Post
I refer to my earlier post: http://www.airgunbbs.com/showthread....65#post6508465
I'll refer you to my earlier post if I can - http://www.airgunbbs.com/showthread....40#post6472340

160 mps equates to 4.8ish ftlbs.

I would suggest that to get anything like 17J out of that length of barrel in .177 with co2 is going to involve changing the laws of physics.