I just recieved my new 7mm dakota brass from dakota, It is made by Norma, what prep should I do to it so it can be ready for loading? I have a sinclair tool for deburring and chamfering the inside of the flashhole, is this good to do?
I also noticed that this tool makes the flashole slightly bigger will this create a problem of pressure?
Thanks
Elmer

IMO, Norma brass doesn't really need flash hole deburring. I just load FL size & load my 7mmDakota. Mine is for hunting & excessive case prep has not proven that beneficial. Your choice oof powder & primer are likely to give you better results.