Greetings again @Stefanhope,
First order of business is to stop oversizing the cases. I use the Redding competition shell holders but they are expensive and you may only use one. See if you can find someone local who has a set. You can set up the die off the shell holder by trial and error but it is not as accurate and very frustrating. COL makes bugger all difference to pressure at near normal settings. There are several .308 rifles here and they all need +0.004" shell holder or more other than the target rifles.
GPM.
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