Scope base related musing

fat tony

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Often gunnutz obtain orphan rifles as part of the settling of an estate. You can get quite a mix from screaming deal to fixer upper.

Older rifles sometimes have no easy scope mounting solutions readily available, so the solitary gunnut is on their own.

A formula that might help a guy build one off bases is solving the radius of an arch. This is if the reciever and/or barrel are cylindrical or circular. You can't always just take a direct reading say, if the reciever has an irregular milled profile.

A good example might be the scope mounting solution for the Australian SMLE sniping rifles you would need a PhD in engineering to replicate.

https://www.mathopenref.com/arcradius.html

A given is that even finding the accurate width and height of the arc could take a bit of headscratching. A tombstone, angle plate, clamps, height gauge with scriber, and a vernier height gauge would come in handy for this. For the average gunnut, some one off lash up might have to stand in for these luxuries.
 
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One of the Gunsmith Kinks books lists Weaver bases, includes base number, radius, thickness and hole spacing.
 
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