1911 Converted to .308

I recently "found" a 1911 in the back of a safe while I was looking for something else. My notes indicate I acquired it around 1/95; don't remember where. The barrel had been replaced with a Remington 7-44 2-groove A3 and chambered for .308. The rear sight looks like an M1 carbine flip-up and is dove tailed into the rear of the receiver. The stock had been shortened in the usual way to make a hunting rifle. In the 50's and 60's there was a lot of activity in the military surplus market, attempting to create and sell cheap hunting rifles made from assorted parts. I seem to remember seeing ads for this combination probably in the American Rifleman. Anyone else recall this?

Incidentaly, the serial #250339 is on the magazine and the rifle and bolt has #320545. You guys can probably date them for me.

I located an ad in the July, 1960 issue of the American Rifleman by "Globe Firearms Co., 30 Front St., New York 4, N.Y.". It lists a Schmidt Rubin rifle sporterized and chambered for the .30-30 cartridge with a "5-shot detachable magazine" for $49.95. The ad does not indicate which model S/R but since the same ad lists the 1889 @ $13.95, it is a logical guess that the .30-30 is an '89. I wonder how (and if) they made the magazine work with the .30-30 cartridge.