Do you find it makes quite a difference with recoil and muzzle jump?No. The brake will be larger than the crown in the barrel. The sabot/bullet should move freely through the brake and stop at the crown. However if you're planning on using loose propellant, then you'll need a method to get the propellant through the brake. I have a small funnel, which I inserted a small piece of clear tubing on, about 2 - 2.5" long.
Myself....... a radial. Tactical brakes will make people dislike you, thoroughly, at any range. Brakes, regardless are loud.
Thanks