Today I received the barrel I had ordered from Krieger. The order for the barrel was very specific as to sizes and contours. It is 7MM.
Krieger are as you probably know are not the less expensive of barrels.

The barrel I received is absolutely perfect. All dimensions are within .001" of the spec's I had given them. The outside is ground to about a 320 finish and is free of any ripples or discontinuities.

It is just beautiful and well worth the few dollars more.

AS a world traveler friend of mine once said, "It only costs a little more to go first class!" My hats off to Krieger