So just how does the wall thickness vary for the 1st couple of inches of the tube outside the chamber? ...
Kind Regards,
Raimey
rse
Raimey,
While it's certainly possible to use a straingage on a commonly tapered double shotgun barrel, the makers of Pressure-Trace recommend using a singleshot H&R type of gun. This is because the chamber outside has a cylindrical shape which minimizes the possibility of measurement error for wallthickness measurments by providing a nearly parallel wallthickness for the chamber area, albeit the chamber has some small taper. I had similar questions to the makers when I bought mine.
