45 ACP to 40 S@W

[anderson3754]

Wishing to convert one of my 45's to 40 S@W. My main question is with the barrel, and the top locking lugs fitting the slide. Do they spec out the same as a 45 ACP barrel. Probably just going to use a drop in barrel, or maybe a Kart EZ-Fit.

Then I would need to know which ejector and extractor is used, and an opinion
on firing pin diameters. In all likelihood it will be done to a Springfield, which is already using the small primer diameter firing pin.

Thanks

[RickB]

I doubt that you could get a .45 breechface to work with .40; even if you had the correct parts, installed in a .45 slide, they'd be in the wrong location to work with the smaller round.

[anderson3754]

I doubt that you could get a .45 breechface to work with .40; even if you had the correct parts, installed in a .45 slide, they'd be in the wrong location to work with the smaller round.

Well, I was hoping you weren't gonna tell me that. The thought did cross my mind. Probably then I'll pickup a slide assembly providing the frames dimensions are interchangeable.

Appreciate the info, thanks

[anderson3754]

Its almost cost prohibitive to buy the slide and barrel even if the frames will interchange.
Plan "B" is buy a new or used pistol in 40 S@W.