I saw it in an acquaintances machine shop. It was in the back and looked like it hadn't been used in quit awhile. There was a good sized shaper next to it. The rest of the shop was strictly modern. It wore a war production tag, so it had obviously been built with a specific purpose in mind. I didn't measure the spindle bore, but it looked to be about 2" in diameter. That machine had probably chambered thousands of M1 and o3/a3 barrels in its day. REAL American iron. Probably couldn't scratch the ways with a new file. Looked to be sound and ready to work. Had a 20-25gal coolant tank with a Grays Mills pump. It was under power, and sounded OK when he pushed the "Start" switch. He was ready to part with it. A 'production' machine. Had a 3 jaw, Cushman scroll chuck of about 10" diameter on it. Motor looked to be about 7.5hp, but hard to tell. Those old motors are large in size compared to newer made. Like I said, a "beast of a machine". Lots of fine grained cast iron. Kinda' like some of the old P&W Jig Boring machines I've been around. Hell for stout. The owner must have used it for some job in the past. Otherwise, he wouldn't have bothered to run power to it, or even had it taking up space in his shop. The machines in that shop had a purpose, to make money doing precision machine work.