Are there any special things I need to know to replace the shafts in my Callaway X-14 irons? They currently have the 'constant weight' shafts and I'd like to install Royal Precision rifle shafts.

I have the rifle shafts in my Ping irons and I like them a lot, but I've never replaced a bore through iron shaft. I've replaced a few bore through woods, but never a set of irons.