Okay, so after literally an entire day of digging around, downloading converters and unpacking and re-packing rez files, I was able to figure out how to get the zoomed in scope to go over the entire screen.
Un-rez NOLFU003.REZ and go to the "ATTRIBUTES/LAYOUT.TXT" file. Look for "ScopeScale" and set it's value to 1.8.
Extra step for nit-picky peeps: Step 1 will enlarge the scope sprite, but some of the circle will be cut off by the screen. If you still want a full circle on the screen, but don't want the edges cut off, you're going to have to unrez "NOLF2.REZ". Then navigate to "STATBAR/SPRTEX" and open "SCOPE1_FADE.dtx" inside of DEdit. Create a new project and import the dtx into it on the "Textures" tab. Export it as a tga and open it in Photoshop. From here, you'll have to scale it down. Make sure to also edit the alpha channel to be smaller as well. I used screenshots and smart objects to help me.
Extra still: Export the TGA from Photoshop, import into DEdit, and re-export as a 32-bit with 1 MIP channel. If you double-click your TGA, you should see the texture image and the alpha channel.
Extra still: Re-Rez your NOLF2 and NOLFU003 directories into .REZ files and play the game!
Here are some screenshots of my process: