I want superb accuracy and quality over quantity. I don't compete. I wouldn't mind later, not sure if the 257 Wby is competition smart. I also like to cry once and prefer quality. I have zero experience reloading.
Ok so, based on your criteria and just loading for the one round to start. This is going to be a touch heavy on the "cry once" part but I think it maximizes utility, has a lot of flexibility for growth, minimizes things that will ultimately be completely replaced in order to upgrade, and works to achieve the accuracy goals with the least amount of fuss.
RCBS Rebel Press
A&D FX-120i balance (balance only, not the full Autotrickler kit)
Redding Elite Bushing Die Set (FL bushing, neck Bushing, mic seater) - get a VLD stem at the same time so you have both
Forster FL die
Universal decapping die
RCBC Universal Hand Primer, or any bench mounted model if you prefer that)
Satern powder funnel
Any Universal loading block
Hornady Headspace Comparator
Hornady Bullet Comparator
Mitutoyo 8" digital caliper
iGauging Outside Mic and Ball Mic, and a stand to hold them
Any manual trickler, I use a Redding because it's one piece and all metal
Lee dipper set for bulk powder dropping
Imperial case wax
Vibratory tumbler and treated corncob or walnut mix
Once you have all that and are ready to load, use the mics to pick:
2-3x correct bushings and a couple of K+M or 21st Century mandrels/die to work your necks with. (I'm not recommending turning mandrels here because I'm suggesting to buy based on your actual brass measurements, and only buy turning and expanding mandrels if you start turning later)
When the time comes to upgrade the only thing that will be completely supplanted is the priming tool, that's kind of an all-or-nothing tool. If you want to add an Arbor press, then the K+M press with an LE Wilson mic die is a good combination - the Rebel press and 3 of the 4 dies will still be what you need for sizing.
If you decide to start annealing, or turning, or volume sorting cases, or anything else you'll have to add those tools, but they won't be replacements for anything on the main list, and the tools like the lab balance, calipers, and mics will be very useful to those processes. If you want to chance cleaning processes later, dry corn cob or walnut is still something I think is important to keep around depending on what kind of case lube you're using, and for general cleaning and polishing.
Links are random vendors I've used before, I don't get paid by any of them. Except I will say CE Products was the best deal by several hundred bucks when I bought my scale.
A&D FX-120i is the ideal scale for your reloading bench. Superior accuracy and speed, at an affordable price for this laboratory grade scale. Always in stock. $580.00 USD - Free Shipping to The Lower 48
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257 Weatherby Magnum Type-S Elite Bushing Die Set by Redding Midsouth now carries the 257 Weatherby Magnum Type-S Elite Bushing Die Set. The 257 Weatherby Magnum Type-S Elite Bushing Die Set is comprised of a Type S Bushing Full Die, A Type S Bushing Neck Die and the unparalleled Redding...
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Our Bench Rest® Sizing Dies are manufactured from the finest quality steel and are hand polished both before and after heat treating to guarantee an extra-fine finish. They are all equipped with our exclusive E-Z Out Expander button which solves the age-old problem of keeping case necks...
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