Issues with Brass Resize/Trim - Hornady Die

[Bruce_in_Oz]

The fun part of the .45 ACP and the 1911 pistol is looking at the original specs for the round and the chamber.

There is NO "shoulder" at the forward end of the chamber. How does it "headspace"?

Old John Moses was designing a MILITARY pistol that had to be able to digest ammunition of pretty-much any origin.

It was also designed to feed from a magazine, not be hand-fed and then have the slide slam forward. H even built in a trick to handle that if it were tried. How far in can an up-to-spec extractor ram a round? Don't know and don't intend to find out in a hurry.

Now, go to the back of the slide and push the striker forward as far as it will go. A bit more than 40 thou, last time i looked.

So, there is a bit of "flexibility" built into the old girl. .45 ACP is a relatively low-pressure round, so, if you manage to fire the thing with "excessive headspace", what will happen?

I run a 9mm 1911, so I have never tried to do all of this.

However, does anyone have drawings / dimensions for Georg Luger's original 9mm Parabellum chamber and cartridge?

As Mark Novak says, "Down the rabbit-hole!"