I recently ordered a now 20" barrel for my .308 build. I ordered a bull profile and recieved a "heavy" I do not have the exact measurements right now but it appears to be .936 up to the gas block, the gas and rest of the barrel .750. my question is was this a fortunate accident? It seems alot lighter than a full bull but still seems to have good surface area for cooling. I also want to mention that the portion in front of the gas block is fluted. Thought?