I used norma brass in my 303 and when I lost too many and couldn't buy it any more changed to R P rem and it seemed fine. Lasted plenty of reloads and accuracy was pretty good. For an ex target 303 hunting rifle.
I wouldn't recommend running two types of brass specially if you need to use different powder charges. Considering you'll be often having a few rounds left at the end of a batch, changing over resighting and so in it will.likely be cheaper in the long run to just buy more of the expensive brand.
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