6.5 Weatherby, 6-7 months, depending only on McMillan
They have the Dies, brass is available for forming, bullets are available. POWDER is going to be the main problem. They develop a load and include the recipe and a box of loaded rounds.
I have 7828ssc, 4831sc, RE-22, H-1000 and Mag-Pro left over from my 7mmWSM.
Of course, I will keep everyone who gives a chit posted.