Different spacing for scope base holes?

[Lee in Texas]

I just bought a Ken Farrel Picatinny rail for my short action flat back, because the Nightforce rail that I bought is for round back. The Farrel rail doesn't fit, either. The spacing of the holes from front to back is a little bit different. All these tiny variations are enough to drive someone nuts. Now I need to look again for a rail. Hopefully the third time will be the charm. I may ask if Farrel can just make one with different hole spacing.

[Hector]

The pre drilled holes in the receiver could be off, or the Farrell base holes could be off. I have never used Ken Farrell products.
I like and use EGW products and have always been satisfied. I find their prices to be very reasonable and their website is good at describing what fits what.
Also, do you have something to measure the hole spacing? This would be a big help in your quest.

[Robinhood]

Find a dial caliper.

[RustyShackle]

I would start measuring like Robinhood says. Somebody is off the mark.

[Lee in Texas]

Yeah I have dial calipers. I also called Farrell today. They offer one with the correct spacing for my action. If someone offered a printed "spotters guide" to different Savage bolt actions, I would buy a copy.