Someone tested 35 muzzle devices measuring only how much recoil was reduced with a sled device. Not as scientific or technical as Andrew's tests but still interesting none the less.
https://www.youtube.com/watch?v=3FD-Rou9-9A
In table form: http://www.thetruthaboutguns.com/201...vice-shootout/
http://truthaboutguns-zippykid.netdn.../Table-All.jpg

