Hal said,
"Using a Dremel cutoff wheel means you have to grind your way through the rail, which is time-consuming."
I just finished "grinding" my way through code 148 steel rail and it took ten seconds at the most. After the cut, the rail end took only a minimal number of file strokes to be ready for a rail joiner. I used a Dremel cutoff wheel, #409, on a flexible shaft.
Ed