The Firing Line Forums - View Single Post - Beginner AR-15 Competition?

Ken O · February 21, 2011, 11:32 PM

Real good info above. Barrels are consumable, good for 2000-4000 rounds usually. The reason for heavier bullets at 600 is better ballistics for wind. If no wind, not much difference.

The 9 twist will probably stabilize a 75 Hornady HPBT or a 77SMK. Try those first, if not, the 69 SMK will do.

Barrels are real easy to change out on an AR. When you shoot at a club, ask around and someone will help you when its time. Keep a barrel log and mark down every round shot at the end of a practice or match. Not hard, just look in the box and see how many are left at the end of the day. Also record all your come ups for each yardage at each range, again not hard. When you come off the line click down and record. Then put your dope on for the next yardage before moving back.

Nothing to get excited about, just go out and have fun.

February 21, 2011, 11:32 PM	#9
Ken O Senior Member Join Date: November 2, 2005 Location: Half way between Grayling and Cadillac, Michigan Posts: 353	Real good info above. Barrels are consumable, good for 2000-4000 rounds usually. The reason for heavier bullets at 600 is better ballistics for wind. If no wind, not much difference. The 9 twist will probably stabilize a 75 Hornady HPBT or a 77SMK. Try those first, if not, the 69 SMK will do. Barrels are real easy to change out on an AR. When you shoot at a club, ask around and someone will help you when its time. Keep a barrel log and mark down every round shot at the end of a practice or match. Not hard, just look in the box and see how many are left at the end of the day. Also record all your come ups for each yardage at each range, again not hard. When you come off the line click down and record. Then put your dope on for the next yardage before moving back. Nothing to get excited about, just go out and have fun.