Posted: Tue Jul 29, 2014 9:09 pm
Tim,
There's one or two BR shooters stateside who are playing with techniques to index barrels, determining the correct alignment by the result. One involves a threaded "collet" on the barrel that allows indexing to be achieved without the need to rechamber (can't recall if LH & RH threads are or aren't involved), another for press fit rimfire barrels using a coned chamber end instead of extractor slots. Incidentally, as far as indexing club shafts are concerned, it's probably similar to finding the spine on a fishing rod blank. That's achieved by pressing the tip against the ground, forming a bow between both hands, at which time the blank rotates until it's weakest side is uppermost.
John
There's one or two BR shooters stateside who are playing with techniques to index barrels, determining the correct alignment by the result. One involves a threaded "collet" on the barrel that allows indexing to be achieved without the need to rechamber (can't recall if LH & RH threads are or aren't involved), another for press fit rimfire barrels using a coned chamber end instead of extractor slots. Incidentally, as far as indexing club shafts are concerned, it's probably similar to finding the spine on a fishing rod blank. That's achieved by pressing the tip against the ground, forming a bow between both hands, at which time the blank rotates until it's weakest side is uppermost.
John