whiterussian1974 wrote:silencer_kid wrote:TROOPER wrote:Beyond that, the manufacturer can make its baffles concentric, and the unit very rigid to itself, but not relative to the barrel if the thread-job is done poorly or out of spec for the silencer itself.
huh? simple math tells us that if a cone/k/whatever baffle has OD that is perfectly round, and a perfectly round/concentric hole in center, and that part needs clearance into a tube, then the baffle center hole is no longer centered on the tube axial.
You're saying that if the Baffles' OD and ID are both concentric and perfectly centered; that math says that these aren't centered?
Ok, I get it. He's saying that the baffle-stack -- talking about k-baffles here -- are laying in the tube, with a very small gap between the top of the stack and the inner 'ceiling' of the tube. Here's a hastily drawn crude illustration:
In the image, all four orange lines would be the same length, denoting that the bore
through the baffles is perfectly round, and centered. However, since the baffle stack itself cannot be perfectly centered within the tube, due to the fact that
the baffle stack outer-diameter must be smaller than the tube's inner-diameter, then the bore hole cannot be centered to the portion which screws on to the muzzle.
I have absurdly enlarged the gap between the baffle-stack and the sleeve in order to illustrate the point.
We'll call this type of induced misalignment "internal tolerance stacking error". This can be reduced by making the baffles absurdly tight relative to the sleeve so that a pusher tool and foul language is necessary for their removal or insertion. This can be
avoided by simply using a monocore, since the monocore itself is "at one" with the adapter which screws onto the barrel threads.
This type of error is more theoretical than practical, since the tolerances of baffles-to-sleeve -- especially in non-user-serviceable units -- is very tight. But because it would still exert a minimal amount of uneven gas pressure to the bullet as it speeds through the baffle-stack, then such minimal lack-of-uniformity might manifest at maximum shooting distances.
It's quasi-interesting theory, but basically useless, since the amount of error induced by this absolutely pales next to a tenth-of-a-mile-per-hour side wind, or shooter-error, or barrel-whip, or uneven mass distribution in an individual bullet... etc. You could never remove enough other variables to ever test this particular one, since no self-respecting silencer manufacturer would ever produce a $1,000 rifle silencer which rattles when you pick it up; meaning that the baffle-stack-to-sleeve tolerance is already practically eliminated.