Need recommendations for scopes calibrated in 308 to put on  Rem R25 20". Price range $250-500.
Thanks
Micko

Just a bit over your price, Pride Fowler Rapid Reticle 600, or 600-2 compact.  They are cheaper direct from PF than from some place like SWFA.
ETA: PF makes the Rapid-Z reticle for Zeiss.

I bought a Leupold Mark AR and had the custom shop make a dial for me. I bought one of the higher priced scopes (495.00) and the dial was just under 60.00. You should be able to do the same in your price range.

look at a weaver tactical 3x10x40 sold at midway with a mil-dot reticule also check out the 3x9 super sniper at swfa  this scope also has a mil-dot reticule . you are not limited to any one caliber and you can make an elevation come up chart for different loads . just a bit more versitle.

If you are considering $500, do yourself a big favor and think about Zeiss Conquest optic with the Z1000 reticule.   It's calibrated to the .308 round with a .50 BC bullet.    At my altitude of 4400ft, and a 24" barrel, I can get away with the .43bc 168g Hornady, that fits exactly.

Check out my thread, where I talk about how much I love this scope.
http://www.ar15.com/forums/topic.html?b=3&f=121&t=516145

Zeiss has a calculator on their site where you can play around with different loads, or commercial ammo and see how it lines up.

$500 for that scope!  where ?
every place I look its more like 750 850

They always forget to share the deals.  

There are other less expensive versions that use the Z1000 reticlue; you are right the scope I have cost 769 delivered, and even at that, you should consider it.    

Yes, and the 1000 is made specifically for the .308;  I'm sure he can get the same 1000 reticule in the Pride Fowler scope also.

it ain't tacti-cool, and has no frills, but it's made in usa, has lifetime warranty, and has a bdc reticle option: [scope] .   reticle: [link] .

i bought the plain duplex version. i like it.

It retails at $699, so it's a little more than you state, but I love my SHEPERD with the instant range finding reticle. I've had it on an M1A/M21 and a Knight's SR25 and it has worked as advertised.

I understand the attraction of a scope calibrated to a particular rifle but I don't see how you can buy an off the shelf scope that will work with your rifle and your ammo.  It would seem that it would be necessary to have the drop calibrated for a particular rifle and a particular cartridge for it to be of much use, and even then you would be limited to using only one type of ammo (if you wanted the pre calibrated scope to give useful information.)  It just seems to me that a better solution is to use a nice target/tactical scope and develop a range card or use a computer (you can get apps for either Android or IPhones that will calculate everything for you).  If you aren't going for very long range, where the drop becomes very large, then I suppose some small errors in the scope calibration would be ok, but at those ranges you probably don't need to worry about bullet drop in the first place.  You can set up a .308 to be within a couple of inches at all ranges from 0 - about 275 yards with no adjustments needed, and past that the drop with different loads become significant enough that it is unlikely that any pre calibrated scope isn't likely to match what you are using.

I  like my Millett TRS 1 , 4x16x50 ,may be made in china , but it works quite well. Around $300.,
Of course its not a Night Force ,but clear & precise optics .