If I recall correctly, the article was published in the Journal of the Optical Society of America around that time or perhaps a little later.
Bruce Griffiths wrote: > Chuck > > It was a paper written around 1942 detailing the procedures used to > align the sights of mass produced rifles for which it was impractical to > have each rifle individually adjusted on a firing range. > Unfortunately I dont think I have a copy of this any longer, however > I'll keep an eye out for it. > The alignment jig used a mirror attached to a cylindrical plug that was > a close slip fit into the end of the bore. > It wasn't perfect but far better than not adjusting the sights at all. > > Bruce > > > Chuck Harris wrote: > >> Could you be more specific, and perhaps provide a reference? >> >> Paul Mauser's group was pretty fussy about sighting through the >> new barrels, and bending them a little here and there to make sure >> their bores were perfectly straight. The WWII records on the M1 Garand >> talk of using a bore scope to adjust the adjustible iron sights. >> The WWII records on the M1 Carbine talk of the same technique. >> >> -Chuck Harris >> >> Bruce Griffiths wrote: >> >> >>> Mark Sims wrote: >>> >>> >>>> I got to play with a custom .50 BMG that shoots meaningful groups at 1500 >>>> meters... the maker's definition of >>>> "meaningful group" is "smaller than your head". I managed to put two >>>> rounds through pretty much the same hole. >>>> Don't know where most of the other 18 rounds went... Then there was his >>>> .17 cal varmint rifle. Does wonders for >>>> groundhoggies at 500 yards. Most gawd awful recoil through. I was black >>>> and blue for a month. The barrel and all >>>> the hardware in those guns is finished to optical tolerances and maintains >>>> it despite having just a little less >>>> energy than a small nuke going off each time you fire. >>>> >>>> >>>> >>>> >>> The fact that the direction in which the last 4" of the barrel largely >>> determines the initial trajectory of the >>> bullet (in absence of crosswind etc) was made use of to assist in alignment >>> of the sights during mass production of >>> infantry rifles during WWII. >>> >>> Bruce >>> >>> >>> > > > _______________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. > > _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
