I have been reading up on muzzle brakes and the degree of recoil mitigation they provide. The key point that I have picked up on from various threads seems to be a lack of quantitative measurements. I came across these videos from New Zealand and thought that some people here might be interested.
Muzzlebrake Testing Part 1 - YouTube
Muzzlebrake Testing Part 2 - YouTube
Muzzlebrake Testing Part 3 (Varimax) - YouTube
Muzzlebrake Testing Part 4 - YouTube
Muzzlebrake Testing Part 1 - YouTube
Muzzlebrake Testing Part 2 - YouTube
Muzzlebrake Testing Part 3 (Varimax) - YouTube
Muzzlebrake Testing Part 4 - YouTube