Length is the LAST thing I worry about w/SWC and..
just make sure you leave a bit of widest part of bullet (before it tapers up and in) exposed above the case neck to ensure feeding like picture of the bullet on the FAR LEFT below.
I also strongly recommend the LEE carbide FACTORY CRIMP die, not to crimp the bullet, but as a final "sizer" to facilitate reliable feeding (i.e. as a FOURTH and final step in produicing the loaded round).
https://www.milsurps.com/images/impo...image010-1.jpg
https://www.milsurps.com/images/impo...id668253-1.jpg
My old Army pistol team shooter recommended
4 grains of Bullseye with both sizes 185 and 200. The .45 is not a sensitive cartridge for things like OAL or case trimming. I have cases from 1918 that just keep on giving after many, many reloads. The lead bullets perform well and to be truthful, I have not noticed much difference in lead vs Sierra match bullets. I have a very accurate Bob Chow built (1950s) target piece built on an Army 1945 lend lease pistol.