This is the measurement i use for controling the OAL. The length of the bullet from nose to base can change with different alloys used with cast bullets. As 45acp brass lasts forever, the rim diameter can become oversize causing feeding problems in some autos.
g5.5 I got 850 with the 4.2 Clays in my Gov Model 1911 - just over the line - a friend said he had to go to 4.3 to be over - it may vary by barrel or lead or whatever - ymmv
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