Whats the most popular barrels? I know majority of barrel makers but like example the 6 groove douglas barrel 1/10 vs the 4 groove one,which is better for accuracy? I want to put a heavy barrel or at least med weight in the m14 after the trade is done and want ideas. Right now the douglas is 210 for 4groove and 240.00 for 6 groove,so does that make 6 groove better? I know down through time say m700 rifle was 5 grooove douglas in veitnam from what i read and a lot of people like mike rock barrels which are 5 groove. Brand matters but i am curious about the groove what it plays since theres not much on that that i have read. Hart be nice. Not seen any deals and i am shoping on the cheap side evan though i believe you get what you pay for. What good results you got with what barrels? twist. I don't want 1/12, i rather have 1/11 or 1/10. Like to try 1/11 though. Any own super match m1a and how is it shooting with what barrel and what all was done to gun and ammo used?