Cal..30 M2 Ball for US rifle M1903 or US rifle M1...could anything be better? T47, 7.62x51 NATO, M885, Cal. .45 Gov't., .30 USA, 58/100in. expanding ball, Cal..45 M1911 ball, Calibre .69 buck &ball! I love 'em all but the .30 Gov't. M1906 is something special. Oh, and of course Cal..50 BMG...