Not a problem with the stock bridge, but the Schaller sits so much further back that...
…part of the hole will be visible at the front of the bridge. Not good.
Given that I don't really like where the ground wire comes out in the pup rout anyway, I decided I may as well drill a new, better positioned, hole for the ground wire. Math time.
65mm horizontal run with a 16mm drop.
That should mean a drill length of 76mm at a 13.8 degree angle. The 16mm vertical drop plus the thickness of the drill bit should bring me out around ~1mm up from the bottom of the rout. Hopefully.
The bridge has a riser plate to adjust bridge height, which I may or may not use, but it's handy to check where the wire hole will sit too.
cont.