� would it be possible to post a picture, drawing or schematic of this contour as I can certainly see the benefits involved.
The dimensions on a specification drawing would depend on the caliber of the barrel and the desired barrel length.
It's easy enough to draw one if you can't simply envision it. I can't do it for you right now � sorry.
Start with the usual diameter over the chamber, for the length of the chamber, then draw the muzzle diameter (vertical line) out at the barrel length that you want (out there where you want the muzzle to be. Add 0.240 inch to your bore diameter and round the sum up to the nearest 0.050 inch.
For example � 0.308 + 0.240 = 0.548. Round it up to 0.550 inch).
Then connect the forward end of the chamber reinforce to the muzzle diameter with a straight line.
Voil�!
