Let me know if you want to start taking contributions as a sort of "group purchase." I'd be happy to chip in and I would have no problem with you or any other member of the forum becoming the holder of the membership on behalf of us all. A group effort like this could end up being a new way for the forum to get information from an established archive that otherwise would be speculative or piecemeal.
It'd be good for getting a bunch of individual information.. but the problem with trying to work from single rifle entries is that so many went out late. Look at any ledger pages and you'll find many that went out 2 or 8 months late, for no special reason. So the info is good.. but can be confusing. So I'm not sure how much specific good would be gotten from getting info on 500 specific guns if all you're getting is info on that one, single gun.
I'm not saying I don't have ideas.. or that info on individual rifles isn't useful (FAR better than nothing!).. but we'll see.
