[WolfWings]

Honestly yeah, the math doesn't support major benefits from a muzzle brake or other recoil compensation tool at the end of the barrel for almost any shotgun that's not an NFA. Shotguns just don't have the chamber pressures or gas volumes to have anything left to work with after a foot to foot-and-a-half of barrel.

Handguns benefit greatly due to how short their barrels are, and rifles due to how powerful their charges are; the larger the "flash" you pick up looking down the length of the gun as it goes off (compared to the diameter of the barrel) the more you benefit from end-of-barrel recoil compensation. The alternative is all about adding weight.

And the KSG/KS7 are both light-weight shotguns for their capacity. A Benelli pump with a mag tube extension (so it's 7+1) can end up weighing 9 pounds loaded compared to just under 6 for the KS7; the KSG there's just no comparison.

 

[WolfWings]

Oh there's improvement to be had from them, no doubt. There's gas exiting the barrel, and that can be utilized, but there's far less gas involved in the recoil of a shotgun.

That's also a very tailored test showing how much they can improve things with a well controlled shot being taken, as being strapped to the ~2.5 pound gun-bench and strapped down with bungies adds quite a bit of vertical recoil control to begin with, akin to a shooter with solid down-force that takes a step back with every shot.

That test is akin to calipers for gauging body fat: It's effective as a relative test to show which brakes are better than others, but you putting a V6 on a Benelli isn't going to reduce the muzzle rise instantly to 0.1" for example.

And when you're comparing spending $140 or more for the better performing muzzle brakes, versus $20-40 to add several ounces of barrel or mag-follower-cap weight, or changing ammo types to tailor the recoil to yourself instead, it's all tradeoffs. For raw cost? The added weight generally matters more, as changing the gun-to-projectile weight ratio scales recoil to the same amount. So the lighter the firearm the more added weight helps.

For comparison? The KSG/KS7 is roughly 2/3rds of the weight of the Veyr 12 in that video.

 

[WolfWings]

I know it's been a while for this post, BUT, i just ordered the extended butt pad from Keltec. What size limbsaver works with the extended?

Same size, just sits back a little further so it doesn't 'shade' the M-Lok holes on the butt-stock at all so you can use a sling attachment there without issue.