Has anyone measured how much reticle movement is before and after adding the brake on the can? Can someone comment on “moved for example 1 mil up versus 2.5 mils up before” as an example.
Just did a test in the backyard for this. Using an 11 pound x47 with a 20” Bart CF and 123’s running right at 2800 and shooting standing off a RRS tripod with the clamp fully locked out, I was hoping to measure the difference in my reticle after shooting with and without the brake. The HNT has an aftermarket ARCA lock rail installed so there is no shifting of the rifle in the clamp. The can is a Dead Air TiXC.
I first tried to measure reticle jump by shooting free recoil with the brake attached. That didn’t work well. The whole tripod rocked back and the reticle settled about 11 mils high and 2 mils to the left. I think the tripod could have also shifted position in the dirt. I don’t shoot free recoil so I abandoned this approach and just shot how I normally do off the tripod, which is with moderate pressure on the grip, moderate pressure against my shoulder pocket, light pressure against the cheek pad with my chin weld, and my left hand resting lightly on the left side leg about waist high.
Shooting this way, without the brake attached and with the standard 30 cal endcap on, the reticle consistently came to rest between 2.5 and 4 mils over the center of the target, and about 1.5-2 mils to the left.
With the brake attached, shooting the same way, the reticle was consistently coming to rest between 1.5 and 2.5 mils above the target and around 1 mil to the left. So maybe an improvement of 40% give or take. This was using 5 shots each way.
The most difficult part of this was getting the tripod clamp locked down while maintaining a center hold on the target in the rifles natural point of aim. The rifle is not balanced perfectly, with the fulcrum about 1” rearward of the clamped location on the tripod. It took several attempts on each test to get this perfect before shooting each shot. Normally I will accept a mil or so from being dead center after locking the clamp and just “muscle” the reticle to center with light pressure and send it, usually with good results.
Hope this helps.