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 http://i105.photobucket.com/albums/m...rrelatzero.jpg
stock barrel with load http://i105.photobucket.com/albums/m...th50ofload.jpg
dimpled barrel at rest in test fixture http://i105.photobucket.com/albums/m...rrelatzero.jpg
dimpled barrel with load http://i105.photobucket.com/albums/m...th50ofload.jpg
stock barrel weight 2LB .4oz http://i105.photobucket.com/albums/m...32968/920g.jpg
dimpled barrels weight 1LB 9.6oz http://i105.photobucket.com/albums/m...32968/725g.jpg
thats a difference of 195g or 6.8 oz
here they are side by side http://i105.photobucket.com/albums/m...idebarrels.jpg
I have had no complaints about accuracy
no complaints at all
Marvin