In the machine shop we had a saying.
If you made it, and it’s wrong, you made it wrong.
If you made it to print, you made it to spec; even if that is wrong.
I often wondered why they don’t hold the barrel via a pinch clamping arrangement.
A pinch clamp is like the shaft collar shown in picture, except the receiver is split at 12 o’clock and two or three socket head cap screws cause the barrel to be gripped 360°.
View attachment 429085
Because the pellet distortion caused by over tightening the barrel retention grub screws, dimpling the barrel through to the bore, will be nulled out by a tight choke
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