Leave enough material in the hole so you can hone it to finished size. A wheel cylinder hone should be a perfect fit. Use kerosene or diesel fuel as a cutting fluid.
Would it be possible to alter the design so you would have a through hole that would be covered with a plate in assembly? A though hole is a lot easier to machine than one with a bottom.
Would it be possible to alter the design so you would have a through hole that would be covered with a plate in assembly? A though hole is a lot easier to machine than one with a bottom.