Went out and about this past Monday, wound up at Martin B. Rettig's in Culver City, prowling the rifles on the floor, looking for something <$250 OTD.
Found a MAS 1936--which meant nothing to me. After a day or so on the web, searching a ton of military surplus forums, I know quite a bit more.
It's a French bolt action in 7.5x54mm. Ammo suitable to shoot at Angeles Range (lead or copper-plated lead (FMJ))is not easy or cheap to find ("load your own!" seems to be the common retort), the stock is a little short (a rubber boot from the 36/51 grenade launcher update is available), and only the rear sight adjusts via an almost impossible-to-find set of replacement leaves.
It's $189.99, about $234 OTD.
But, it can be rechambered to 7.62x51, which is to say, .308 Winchester.
UPDATE: After I found the MAS at Rettig's, I ran up to Santa Fe Gun Galeria in Palmdale to see what they had. I had a vague memory that maybe they might have 7.5 MAS ammo...
And they're closed, Sunday and Monday. Well...spit.
So I ran back up there today, they were open, and sure enough they had 7.5 MAS. Two kinds! One was in small, anonymous packages with Arabic writing--probably Syrian mil-surplus steel-jacketed, but the other was blue box FNM, non-magnetic! $17 for 20 rounds, 4 boxes available with no certainity of getting anymore in stock. Ever.
So there you have it. A French mil-surp weapon at one store, commercial ammo at another. And only 60 miles apart.