Scope base-to-receiver alignment is critical to rifle accuracy as well as getting the scope reticle to optical center. Proper coaxial congruity can be most difficult to achieve in a base. Individual custom scope base fitting can be a very workable option.

by Norman E. Johnson

Where coincident axis fails to exist in scope mounting, springing or stresses between metal parts will occur or scope reticle optical center may be compromised – or both. Either way, accuracy and precision becomes problematic at best. In most cases there is something we can do about it, as I shall point out in this treatise.

I was working with a pair of Talley scope bases and rings made for one of the earlier Model 112 Savage single-shot actions and was mounting an 8-32 Bausch & Lomb target scope of proven quality.

Read more in our February 2013 issue. Back issues are available.

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