Im sure this is already a topic but my search came up nothing. Im looking to get a 700. Im not not looking to spend over 600 on the rifle. Looking for .270, 7mm or .300 win mag. Out of the 3 which is more prefered for price and accuracy. Also i know there are different models adl sps bdl. Is the bdl really worth the money for a box magazine or blind magazine prefered?

270 for flat shooting, 7mm for distance, 300wm for knockdown, your choice depending on application. Oh, box mag preferred.

Generally speaking, cartridges than headspace on the neck are usually considered to have better inherent accuracy than ones that headspace on a belt. Since you are looking at basic hunting calibers, I will say that from a hunting perspective, they are all about equal accuracy wise; especially with factory ammo.

.270 ammo is probably the least expensive of the bunch.It will have the least recoil, and will generally be the most enjoyable to shoot, and shoot well.

 

7mm has its place as a general-purpose caliber, enough for the bigger game animals, and still acceptable for smaller deer and antelope. Recoil is moderate to slightly heavy.

 

.300 Winmag is best used for elk and moose sized game of the three you have mentioned. It does have a fairly short neck, so bullets over 200gr. don't usually do very well. Ideally, you'll be in the 165 or 180 grain range. It is typically considered to have about the upper level of recoil that the average shooter can handle.

 

Some prefer a box magazine, some don't.  I have both, and while the box magazine is easier to load and unload a rifle, I do always worry about falling out inadvertently, or forgetting it at camp. The blind mag I just leave loaded, since I almost never chamber a round until I'm ready to shoot.

$600 might to tough to swing for a new 700. You might have to look used. Keep in mind that even the most accurate rifle will not do much without an equally good scope and scope-mount.