If you ever need a persistent friend trying to set you straight, I recommend a GMA guy named John. :) See comments.
Even before you note the Micro
Groove rifling, you ID it as Marlin. The utilitarian -- okay, clunky -- stock is characteristic of the fine old firm's bolt-action line. At least it's walnut.
Then there's the Marlin penchant for adding gizmos here and there. The button on the left side is a smoothly working bolt release. The one in the middle of the receiver cut retracts a cartridge feeder guide. The safety has three positions. One of the "safe" positions lets you cycle the action. The other "safe" locks the bolt closed.
Marlin has long loved Herculean locking systems. But four, count-'em, four lugs?
The mystery is the precise Marlin identity. Several net searches yield a sort of Ron Paul-in-the-MSM result. There ain't no such animal. Even searching under the private Western Auto label -- "Revelation, Model R 270 A ___ Cal. 30-06 Sprg." yields nothing beyond another guy who has one, lost his bolt, and is looking for a replacement. (Rotsa ruck, Pardner.) None of the crossover lists mentions it.
EDIT: Also note the fluted bolt.
The vendor's story is that it was a "prototype," and Marlin decided to call it a "Revelation" to protect the marque if it flopped. I love gun show stories.
Now would be the time to own one of those high-price, limited-edition company history books so detailed as to specify the number of moles on John Marlin's back.
Meanwhile, I'm pleased to own it as a workaday rifle. The condition is superb. It's in the most noble of calibers, the one we used back when we could win wars with a certain dispatch. On a snowy Saturday, mainly checking for bangability, we kept several rounds within a minute of hillside at an estimated 400 yards.
It will make a nice place to store the old Weaver K4 and one of those nice 1903-style leather slings I've been hoarding.
I don't suppose it's necessary to mention it was loopholed quite economically -- about what desperate dealers were asking for their NIB Hi-Points.