While awaiting the arrival of the Colt MarkIV/Series80 Government Model .45 I ordered in 1983, I set about reloading ammo for it. I chose a Lee 190 grain semi-wadcutter mold and having cast and sized the bullets, I had to decide on an OAL for the cartridge. I had a government .45 ACP surplus round floating around in a cigar box, so I measured that with a caliper and decided to seat my lead cast bullets two (2) thousandths of an inch less than what the surplus round measured. The Speer reloading manual (1972) narrative stated that .45 1911's did not necessarily like semi-wadcutter bullet profiles. My Government Model had a throated-barrel and upon first shooting, it digested 200 rounds with no malfunctions in feeding or ejecting. Above all, the gun shot exactly to-point-of-aim.
Again, this was in 1983. Since then I've experienced all the various malfunctions that I and dirty ammo and cheap magazines could create. I truly believe that as an "out-of-the-box practice: of reloading for semi-auto's, seating bullets of shapes different than the standard round-nose designed for the pistols, is best accomplished for reliable functioning if the bullet is seated 1 to 2 thousandths below a factory cartridge OAL. This can make the difference between successful feeding and chambering versus feeding and "wedging" the cartridge. The use of a Lee Precision factory crimp die to full size the loaded cartridge will eliminate the .451/.452 inch diameter problem you encountered.
0.452 bullets were/are made for shooting in handguns with 0.451 diameter barrels. Can't recall ever buying any 0.451 bullets.