mineralman55
Member
I've been doing a lot of case prep for 30-06 and .308 lately, and something I'm noticing is that a significant percentage of the military cases, both standard and especially national match, have rim diameters that are too large. The nominal diameter is 0.473". After resizing, about 8-10% of the case rims are too large in diameter to fit into a Wilson "go-no go" gauge.
Hand trimming the rims by Dremel is do-able, but not satisfying. Does anyone make a jig or fixture that can be used to set the rims to nominal diameter?
I've access to a lathe and mill, so suggestions would be welcome. I suppose I could buy another case gauge, cut off 0.100 inch from the rim end, insert a case, put it into a 3-jaw chuck and trim it, but that seems like overkill.
Hand trimming the rims by Dremel is do-able, but not satisfying. Does anyone make a jig or fixture that can be used to set the rims to nominal diameter?
I've access to a lathe and mill, so suggestions would be welcome. I suppose I could buy another case gauge, cut off 0.100 inch from the rim end, insert a case, put it into a 3-jaw chuck and trim it, but that seems like overkill.