The Insite Heathen in the test was a 5 port too, and it came in dead last for recoil reduction. No idea what diameter it was, but the extra ports didn't push it ahead of the 3 and 4 ports in that particular test which surprised me. Not that recoil reduction is the be-all and end all, but it suggests to me that the first port or two does the lion's share of the work.
That's the best muzzle brake test I've seen to date, love that it wasn't a sales pitch for any one brake. Thank you!
Now do one for bigger cartridges! Haha
You get it right. The heathen didn't performed really well on the recoil reduction bench, and at first I was quite bummed, expecting more. But if you look at the muzzle jump, wow what a surprise we got! One of the, if not the, best performance in keeping target in sight. This is definitely a brake made for barricade shooting in my opinion (refer to the second video, conclusion 1 I think).
For the number of ports, we can clearly see with the carbon that the first port have done must of the work. It's a big brake, and so for smaller caliber (br, 223, etc.) I would consider one of the smaller model like the 4 ports as I'm sure they will perform as good if not better, using more of the baffles.
I agree with Jerry about the work that can be done on a brake to perform better in X or Y situation. You can mixt stuff to get a good performance without too much concussion. But what I've seen so far, is that NO brake performed top on all tested. ie linear recoil reduction, muzzle jump, working good with big and small caliber, and concussion.
At some point, bigger port will work, but as soon as you put a smaller cartridge, you lose pressure, and so efficiency. At some point, you can't have everything, so choose what fit your shooting style the best.