The depth of the bolt face won't matter unless you short chamber the barrel so the rim sticks out past the tenon about .125" or so. Now if you "cone" or bevel the tenon 22RF style the rim will over hang hhe tenon so the extractor can jump and engage it.
There is or was a guy on Benchrest Central shooting a 30-30 BR gun and posted some pictures how he accomplished it. IIRC his topic was "How I make a 30-30 shoot" or something of that nature.
I did a quick search, his name is Mike Turner
Bill
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