just mark the hole locations on one and transfer the marks with a square. the spacing i went with was 4” from the bottom for the first hole and 11” on center from the first hole for the remaining holes.
the closest drill bit i had to the size of the pipe was 1”. it was a little large for my liking so i added a few more degrees to the drill bit than what i was shooting for. it worked out alright.
and here’s why i love this drill press table. it would be hard to support that long of stock on the regular metal table that comes with most drill 