Which method of mounting the Super Swage would you recommend?  Bolts & nuts, or would heavy wood screws work?  The edge of my reloading bench is a 2X4 all around, which would make it difficult to do the bolt, so I'd consider the screws there. 

(With an SDB and an XL650 on this bench, I'm seriously considering making a bigger bench or maybe a separate bench for the SDB and all of the other stuff for the XL on the big bench.)