A little video regarding something I learned today in relation to 12th man’s thread on his .300 BO. A crush washer won’t allow a muzzle device to sit square to the barrel shoulder. And even if it’s all concentric, if the device is leaning it can be enough off to cause a bullet to strike the inside.
Of course the longer the device, the more the problem is magnified. Probably wouldn’t matter in a brake, (except it did in this instance) but certainly would on a suppressor.
The following demo has some flaws, but it’s good enough to illustrate the point that if the device isn’t against the shoulder, it be leaning into the bullet path.
I tested two guns. One was a Ruger American, factory thread job. One was a pellet rifle some jackass threaded in his garage. One has about .017 of travel, the other about .013.
Those numbers are close (I said it was a flawed demo) and I could confirm by feel the one that felt looser was the one with more wiggle.
But which one is which? Who did a better job?
https://youtu.be/fpGKXhD4nQU?si=Glh9dvmswbNeJwae
Wiggly muzzle devices.
Wiggly muzzle devices.
“The shepherd slaughters more of the flock than the wolf ever will.”