I thought I would post some pictures of a test I did on 2 stainless barrels they are both from the same lot the only difference is that one has been painted black.

in this test I measured the deflection of a stock barrel against a dimpled barrel using 50 pounds of weight hanging from each barrel in a cantilevered barrel fixture that simulates the barrel in a upper receiver

sorry the scale is upside down


stock barrel at rest in test fixture

stock barrel with load

dimpled barrel at rest in test fixture

dimpled barrel with load


stock barrel weight 2LB .4oz

dimpled barrels weight 1LB 9.6oz

thats a difference of 195g or 6.8 oz

here they are side by side

I have had no complaints about accuracy
no complaints at all

Marvin