Different Demension On Old Caspian Frame

[Sam]

I got a stainless Caspian 1911 single stack frame in trade a few weeks ago. It has a serial # in the 11,000 range. When I got everything finished today I went out to shoot it for the first time. Everything works great, the gun is quite accurate and fired over a hundred rounds without any stoppages. It really fits my hand well too. It just felt different. After wondering why for a few hours, I took a caliper to the grip frame. It's a standard looking frame, not a race ready. This gun measures 2.140 right at the bottom of the frame, MS housing not included. My other 1911's measure about 2.040 in this area. Can anyone tell me if Caspians have always been this thick? The front strap is obviously thicker when viewed from the mag well. This is the first one I've ever owned. Could the difference be because it is cast instead of forged? Thanks for any info.