I shoot 56.5 grains of H4350 behind a 165 gr Sierra boat tail soft point out of my M1917,not an 03a3 but it might shoot real well out of one.My 1917 shoots this load pretty good,JUST under 1" at 100 yrds.It shoots just over an inch shooting 150 gr steelcore fmj's using 56.0 gr. of IMR 4350.It only shoots the steelcore good because they are the same length as a 165 gr bullet.Regular 150's aren't so good in it.
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