OK well here is a real update! The gun was kind of gritty, so I detail stripped it and cleaned everything out real good (MAN what a PITA!). The design is similar to the 1911, but not quite. The SIG frame varies slightly from the Mustang frame in that the tolerances inside are definitely tighter. This was realized when putting the leaf spring back in, I had to trim some of the bottom of the ejector hook to get it to clear the frame. How SIG got that in there, I don't know. Must be a special tool, but I got it to go right in after trimming off a sharp corner that was catching the frame.
I loaded it up with the Hydra-Shoks, gave it a good hard rack and BAM! Loaded right up. Cycled a few mags worth of them until I was satisfied and headed over to my buddy's house. We fired a full mag of the Hydra-Shoks without issue, and a mag of range ammo. His neighbors get pissy with firearm sounds so we stopped there but what I do have to say is: Old window A/C unit (0), SIG P238 (14).
It fired flawlessly for the simple 14 rounds that we fired. POI was POA at 15 feet. Little to no felt recoil, and the trigger, while being a single action, still probably has a good 6.5-7# pull. I'd still keep the safety on though, obviously.
For those that want to know, the slide strips just like a standard 1911. There is a firing pin safety that prevents the pin from travelling forward without the trigger being depressed, much like the Swartz safety used in the Kimbers. As far as detail stripping goes, you are in for a LOT of surprises and possibly a malfunctioning eyeball if you are not careful. Lots of things go flying so do it in a heavy duty Ziploc or similar bag. A very careful note entails removing the safety. Once the grip and slide is off, the safety rotates upward for removal. FACE THE FRAME DOWNWARD WHEN REMOVING THE SAFETY, AS
THE PLUNGER IS UNDER EXTREME (AND I MEAN EXTREME) PRESSURE. It will go flying with literally enough force to stick into your damn ceiling!!!! I am really glad it wasn't aimed directly at me or especially my eye, because it would have absolutely taken out my eye!!!