Show Improving Artillery A vacuum tube and und a 8 speed high carn camera ra are uie being utilized by the United States bureau of standards ex exp p pats perls l to tn measure the vibrations of ot a aI I gnu som nuzzle muzzle during It Its discharge e. e In iii I still stilt continuing It wa wn found that u tt light coating of or oil In th the I pun gun barrel tau caused ed the gun Fun un to shoot I high and amid that other timings things being I t equal muzzle vibrations Increase U as us the tho powder der charge churgo Is made natle lighter It ItU Itla U la hoped to tn evolve ol u a formula fur for bullets bul but 1 lets and ancI L barrels rr ls which will wUl cut Inaccuracy mac Inn t curacy to 0 the minimum |