Today I got to see a Colt 1911 that was made into a 38 Wadcutter target pistol by Clark. It had a non-dropping barrel and the slide had numerous lightening cuts inside that are not visible from an examination of the exterior. A key was used to cut away a portion of the slide on the left side. Similarly, the right side was also cut so you could see part of the extractor. The slide had a boring bar dropped into it and a lot of metal was removed from it too. The feed ramp was modified for a little bump against which the barrel lug (if there was one) would bear.
The chamber looked like it had a spiral groove cut into it. I'm not sure what that was for.
The chamber looked like it had a spiral groove cut into it. I'm not sure what that was for.