I have to agree with LongRange !! Turning at a slower rate will make you necks come out much better. I have successfully turned down military 7.62 to shoot in my 260. Had to make 2 passes to get
where i wanted the necks. Military brass is thicker !! I use a Lee #2 casing holder and lock stud using a Bosch PS20 pocket driver to cut down my brass. The Pocket driver will only turn 400 rpm max (variable speed) so its a great tool for cutting down necks. My cutting tool is a Hornady cutter !! After cutting I lightly polish using 0000 steel wool. Brass looks nice at this point.. Good luck !!!
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