Neck Turning Dims? Thoughts?
Generally I have only neck-turned for rifles that I either had the reamer or a chamber casting for, but I'm considering turning some crappy rem brass for my wife's Savage 12 and getting a bushing die set up for it.
Not wanting to go through the expense/hassle of casting the chamber, I was thinking out loud about ways to mic or measure the chamber throat, when my wife, of all people, asked "why can't you just use my fired brass?"
I can't argue with the logic. I'm sure the case mouth springs back a bit so I may start a little larger dimension, but I'm thinking if I measure an average of her fired brass, then add bullet diameter, subtract out a little crimp tension, that should give me a pretty good idea of where I should be fore neck thickness?
Am I missing something? Thoughts? Suggestions?