I rigged up the following gizmo which as passed all of my tests for usefulness and consistency of measurement.
My question is what should the diameter of the hole be to provide data that is consistent when shared with others. Info to be shared would be Base to Ogive, bearing surface length.
I guess that there must be a pretty much standard ogive diameter??? I read somewhere to make the hole 0.011" under the cal. diameter. Not sure if that's a good number.
Cals I'm interested in are 222, 277, 338.
Any help would be appreciated. Thanks