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.
