I like the Norma brass much better than Winchester, less waste. I like to weigh my brass and sort them into 0.6 grain batches. 2 batches and 6 useless out of 100 with Norma brass. Much worse with the other.
I f I couldn't find 7mm WSM
brass I would neck size 300 WSM
brass or 270 WSM.
Last year I bought 50 Win.300 WSM and neck sized them into 270 WSM in a single pass. Unfortunately they went into 4 batches. But that's why I like Norma.