milsurpshooter wrote on Mar 20^th, 2018 at 1:08pm:

I'm beginning to think that the extra 0.0015" of my GO gauge may be the issue.  Can someone recommend a SAAMI spec GO gauge that I could try? - milsurpshooter

Forster will sell you one for $36. See   (You need to Login; Image file shows Forster specs.

You could just stone off .0015" from your .0655" gauge. Rub it in an orbital pattern on a fresh sheet of oiled 400-grit wet/dry paper laid on a hard, flat surface. Shouldn't take long to remove .0015".

Being cheap, I'd find a case with a .060" rim and add a shim cut from an aluminum beverage can (typically about .004"). If that combination goes, you should be OK with any cases that are within spec.

None of this is necessary unless you're having bolt-closing problems with the cases you use - almost all of which likely have rims under .062" thick.

FWIW, back when Krags were dirt cheap and gunsmiths knew them well, it was common practice to lap in the front lug far enough to let the guide rib contact the receiver (Norsk style, about .008") when fitting a custom barrel in some wildcat chambering. Lapping yours a couple of thousandths shouldn't be a problem.

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