V Seven has wisely been using these for several years on their .300 Blackout barrels. Here's an example, showing a V Seven .300 BLK barrel on the left and a "normal" Craddock Precision .223 Wylde Bartlein on the right:
I was surprised to receive in recent days both a Proof CF 6 ARC barrel and a Craddock 22 ARC Bartlein barrel with even more generous feed ramps. Shown below is the Proof CF barrel in the left and the Craddock 22 ARC Bartlein on the right, with the "normal" Craddock .223 Wylde Bartlein in the middle for comparison:
As usual, the really smart people in the industry (i.e., Craddock and Proof) know more about what's going on than the rest of us.
I was surprised to receive in recent days both a Proof CF 6 ARC barrel and a Craddock 22 ARC Bartlein barrel with even more generous feed ramps. Shown below is the Proof CF barrel in the left and the Craddock 22 ARC Bartlein on the right, with the "normal" Craddock .223 Wylde Bartlein in the middle for comparison:
As usual, the really smart people in the industry (i.e., Craddock and Proof) know more about what's going on than the rest of us.
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