One more option. I have a Hugh Henriksen reamer that was used to do one chamber that I will put in your mailbox for $150.
Bull's-eye
Yep, a rented reamer may have done a bunch of barrels before you get it. Even if re sharpened not as good as a fresh one IMO. And, you can probably re sell it after use for about what you paid. The 7 Mashburn Super is a fairly popular wildcat with easy to make brass and a significant performance improvement over the two other more common 7mm Magnums.
