Grabbed my micrometer rather than digi vernier and measured a few seated cases. Lapua brass gave 0.3375" to 0.3365". If was a little lumpier than expected but it's a hunting rifle so really is not a biggie. I'm going to use a 0.335" bush from here and see how things go. I took second in one of our DA shoots today with the current load using 334 bush ( not much to skite about though as there were only three shooters and the guy who came 3rd is a better shot than me usually).
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