Looking back and forth between this one and "Eclispe Redraw", where the slide is racked back, I can see where it could go up to .45 ACP but it is still easier to tell on the other one. It may be the trigger guard, but I'm not sure. When I measure it out scale-wise as you indicate, again it makes perfect sense. So it is purely an optical effect, but to my eyes something seems off... Then again, some of the Glocks always looked strange too, but that certainly didn't make them bad guns. SIG, OTOH...