I've seen a few posts about how to mount a scope on a Winchester 94 but I haven't seen an example like the way I did mine.
My rifle is a pre-64 30-30 and mounting a side scope was super easy.
Online you can buy Weaver Side Mount Base 48415. Take out the top 3 screws on the left side of the rifle and mount the base with the 3 screws provided. Save the original 3 screws in case you want to restore you 94 to original condition some day.
Online you can buy Weaver 1" Detachable Side Mount Rings 49350. Install the rings on the base with the 2 large screws provided.
Install your scope of choice (mine is a Leupold VX-I 2-7x33) in the rings just like you would any other scope. Bore sight and you are ready to head to the range to dial it in.
Total time to mount was about 5 minutes.
I inherited this rifle from my grandfather and I killed my very first deer with it 30 years ago and several more since. If all goes as planned my son will use it to kill his first deer in 2012.