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Re: Slugging Procedure
Posted by Dick Hosmer on Wednesday, 26 October 2011, at 11:24 a.m., in response to Re: Slugging Procedure, posted by Thomas Jacobson on Wednesday, 26 October 2011, at 6:58 a.m.
Interesting procedure - not sure I agree yet, but will mull on it.
Personally, I feel that people who obsess (not you Tom) about odd-numbered grooves unnecessarily complicate the .45-70 situation, where the lands and grooves are equal in width.
I'm sure we've all played with a compass, marking out the radius around the circumference to create six-sided doodles. Do it with two concentric circles (R1 = 2", R2 = 2.25"). Darken alternate arcs on both circles. Connect and darken the short radial lines between the arcs. Congratulations, you've just made a schematic drawing of an SA bore! NOW, note that "high points" ARE diametrically opposed, and should be directly readable by an ordinary mike!
This is a "special" case, and ABSOLUTELY NOT applicable to, say, 5-groove Enfield rifling, where an anvil mike definitely IS needed.
After mulling, I think you're getting the same result by a different method. B + 2P - 2P = B. :-)
I would REALLY appreciate input from the shooters (and engineers) here.
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