Simplest way to do this (reduce O.D. of copper tubing) WITHOUT a lathe?

I was wondering if there’s maybe a large chuck (say 3/4”) where the drive end would fit in my drill chuck? Then I could hold the tube in the chuck, and spin the tube?

I bought a chuck from Home depot. 1/2", for my 3/8" drill. I am not sure about 3/4", but there is probably one out there, with some google searching.