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SAUM brass is no more difficult to find than wsm brass. OP, don't be scared of going 6.5 saum. It's an incredible round, that will walk all over a 6.5 cm. Plus you won't have to be a CM fan boy.If you want easy inexpensive brass to load go with the 6.5 CM, 260 Rem or 6.5 WSM. Lots of new & once fired brass available now & well into the future. Turn 308 brass into CM or 260 easy. Turn 270 WSM into 6.5 WSM in one pass thru a FL sizer. Don't box your self in with expensive difficult to find brass that will get more expensive & difficult to come by as time goes by.