Hello, Wanted to ask a quick question about the belted magnums. I know the new trend on precision built 300 win mags is to headspace on the shoulder rather than the belt so my question is this as simple as using say a no go gauge rather than a go gauge and then sizing the brass accordingly? or do you have to get a special reamer? My brother and I are talking about going halves on a reamer between the two of us we want to do 3 barrels and were going to have it throated for 225 hornadys.
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