I've had good luck with the Hornady New Dimension dies for standard calibers.
However for my 6.5mm SAUM, I went Redding 'S' type neck dies with bushings, a Redding 7mm SAUM body die for bumping case shoulders back and a Forster Ultra Micrometer seater die. Using these dies, I have been able to keep my ammunition runout to very small tolerances which translates to small and consistent groups.
I imported the dies from Sinclair International in the US as they were cheaper and much quicker to obtain than buying from the NZ agent.
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