I have ordered a new barrel for my 7 rem mag. It is a remage conversion. I’m looking for some go/no-go gauges that would headspace off of the shoulder. All I have found so far are for the belted magnum cartridge family and use the belt. Any ideas?
There's no such thing. By definition, belted magnums headspace... you guessed it... on the belt.
If someone were to come up with one that could be used to set the shoulder position on a belted magnum - then it isn't a headspace gage anymore. It would be a gage, but not for headspace, and just someone's idea of what the shoulder position "ought" to be.
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