Resizing die

[Tangodown]

I’m new to the 6mm Arc

But been hand loading for decades

A LOT depends on your budget and type of press

For 7/8-14 dies this has been my experience:

For full length resizing: hands down Forster Dies

For bullet seating: Forester Bench rest Micrometer or Redding Competion micrometer - best in their class and equals

Crimping (for those that do or have guns like straight wall/levers/revolvers:
Redding crimp dies

For neck sizing with bushings: Redding or Forester

YMMV……they can be pricey…..bang for buck: Forester……one and done

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If you're shooting from an AR15 platform I would strongly suggest the RCBS SB TC die set #28007.
I and others have had issues with a raised ridge at the base of the cartridge using other die sets.
A side benefit is you can shoot that sized brass in any 6 ARC rifle.
I try to keep my shoulder bump at .003-.005 on my AR15's. Adjust your die to your liking. I don't use the Taper Crimp, only neck tension. And remember, if you want consistent performance you need to anneal them cases!
P.S.
I may be a newbie here but I've been building and shooting AR15's since the early 70's!
Been reloading since 1966.

If going with RCBS SB dies consider buying a Forster expander ball assembly……they work in RCBS dies and I’ve done it and found by using the Forster assembly it helps reduce runout…..for those that worry about runout.