I only have one .45 Colt that has a decent chamber, an Uberti 1871 open Top. The cylinder is so thin that there was no luxury of hogging out the holes to .490" like most makers do, so it's nice and tight like it should be. The other five revolvers and carbines in the stable are various iterations of way too big, but will share ammo and with only one exception chamber each other's fired brass.
A compelling argument could be made for choosing a .44 Special (or Magnum) over a .45 Colt simply for the dimensional consistency. I just happen to like the .45s more, not sure why.