I thank all that have shared their insight, much appreciated. I'm have found many more threads on 6 mm,
Seems to be a lot of choices for the 6 mm caliber.
Agree on the head stamp, just have lot's of 243 brass, save cost. Correct on resizing brass or I believe Norma offers now, also.
Will need to keep marked boxes of SLR ONLY.
Simple resizing the brass is attractive for me.
Calib/woodnut, I'm in the process of build, Bartlein 7.7 twist, finish at 26, question are you seeing better results with BAT vs. Remington. Any other suggestions would be appreciated.