Originally Posted by mrbb

no the scope will be find , there all built to handle about the same recoil, as they know folks swap them at times, the ONLY thing that might be an issue with using a .223 scope on a 30/06, will be if it has reticles designed to use a .223's ballistic's,(or a dial knob)
as the point of aim(ballistics's) will NOT be the same for a 30/06 as a .223, causing the adjustments for any special reticles or dial not match up with ballistics's on the 06 for you
recoil will NOT be an issue on the scope though, quite honestly the .223 will more likely have more of that due to its action blow back and all and being a semi auto, over most 06's being bolt or pump(and a few semi's) so scope is find on your 06 as far as recoil , no worries there!
you can contact Nikon too, and sure they will say the same to you, there a decent company to talk to!