Re: 45 ACP OAL Question
<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: bigwheeler</div><div class="ubbcode-body">COAL is minimum length for pressure purposes. Don't go shorter. You can go longer if you need to for feeding. </div></div>
this is in reference to the reloading manual. As bigwheeler mentioned, you can go a bit longer when looking at data in reloading manuals, but if you go shorter it will increase pressure.
the actual SAAMI specs for the 45 auto are max OAL is 1.275" where the minimum is 1.190".
some guns are a bit more picky about OAL than others (my FNP45tac does not load longer 45's). so once you have settled on a powder you can try a few lengths to get the desired results. if you have to go shorter than what's in the manual, decrease powder and work back up again.
SAAMI 45 auto specs