Cabelas has it in stock
Surplus Ammo has it in stock
And others.
While you can argue the differences between SS109 and M855, actually the differences are few.
Getting into the reloading business to supply one, two or even ten specific cartridges would be a pretty thin business plan.
What happens when specs change, the war is over or you can't keep up with demand ?
I can't speak for everyone, but most of the shooters I know buy several cases at a time. How long do you realistically think it would take you to turn out 10 cases of ammo ? Most non-commercial machines at best will realistically do 1000 an hour, with everything prepped ahead of time. On a larger scale, Camdex machines turn out ~ 5000 rounds per hour. The base unit runs about 35,000 + 6,000 or so for caliber conversions. With these, you have to deal with the issue of space, power and maintenance - not cheap.
How many people do you think buy M855 (or ??) per day ?
How much profit do you anticipate making from each case ? Divide that by the number of hours invested in the actual reloading, case prep, packaging, shipping, accounting, documentation and everything else that goes with it (lawyer, accountant and insurance fees) and you will probably feel the way many do; it isn't worth the investment in time or resources to get it done.
Do you happen to know (or ever heard of) any reloaders that were filthy rich ? If there are any, I would bet you it didn't come from reloading.
Expand your offering, find out your facts from somewhere other than a Internet forum (as in GSA) and get a damned good lawyer who is versed in dealing with gov't red tape.
Or, go to Cabelas, Surplus Ammunition or one of the many places who have the product available. If you buy enough of it, you might be able to mark it up enough to get a free case or two of your own.
If you want to take up reloading, great. If you want to cash in on the perceived (temporary) shortage for a specific type of ammo, save the time, effort and headache.
In the beginning of your post, you say you have a lot of cash for investment, in a subsequent post you indicate your concern over attorneys fees... which is it ?
In any event, to get your ammo certified as the equivalent or equal of XM855 (or ??) isn't going to come in a week or two. Going thru the process of gaining a gov't standard/quality approval will take MUCH longer than you would imagine. Certainly longer than it takes for Winchester to get it's new plant in Mississippi online, or the war to end, at which time there will be millions of rounds of surplus available all over the place.
Good luck with it
BigSlick