The standard responses from CMP (IIRC), are 4-5 years on M1s and 2-3 years on 1903s. Most of what will be left are the lower grades as that is what they have the most of. IIRC the breakdown of what they get when opening the crates is something like 1% collector grade, 5% correct, 10% service grade, and the balance are field, rack and scrap/junk. The new in wrap ones go to auction for big big dollars and the collector ones are like $1400. Check out thier forum on the CMP website.
Recently when the 1903a3s were selling out CMP said they had 6 months to a year's supply. They sold out in about 2 months. I think the CMP sales are accellerating as people are figuring they are a finite item now.
They say they have thousands of them still in crates that haven't been looked at or graded. They allow a person to buy 8 M1s each year! Although they aren't supposed to, dealers are buying them up and selling them at a huge mark up. Heck check out the equipment exchange here, lots of guys are doing it right here contrary to the signed affadavit they sent to CMP. Easy enough to do, order a bunch of rackers for $350 and sell them for $600 or more. (after taking and swapping collectible parts for Winchester etc or early prewar parts) They can Ebay the collectible parts and get the cost of the rifle for 2 or 3 parts. Come up with a Winchester op rod or good condition barrel and you probably can pay for 2 rackers.
The privateering is going to dry the CMP rifles up soon, so get one soon before they're gone and you have to buy the same rifle later for $1100.
I've been tempted to order 4 and resell 3 just so I get a better chance at getting one in nice shape. But then again, I have a hard time selling guns.
SoS