Yes and i would agree with you there except for on one point. With less groves you get a wider land and less throat erosion. The 3 and 4 groove barrels will give you slightly longer life. The other thing i cant figure out is why im getting higher MV then expected with them. The bearing surface is still the same so you have the same ammount of drag but for some unexplainable they just shoot faster. Maybe its just the way the lap. I will agree 100% that no matter how many grooves it has or how they are done a good barrel maker will get you a good barrel almost every time.