There is an interesting article in the current issue of American Rifleman with a test of the 527 carbine. The article is generally favorable but contains some erroneous information about the bore diameter. They state that the diameter is .308. I called CZ to get a verification that the diameter is .311 and the gun is built for standard 7.62 x 39 ammo.
While on the phone with CZ I also asked them about using Wolf ammo in the gun and was told it was OK to do that.
The test results in the article showed an average grouping for the Wolf ammo to be 2.23 inches at 50 yards. The average using Winchester was 1.68 inches.
Bill