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Marco Califo · July 15, 2012, 05:57 PM

4r That may be your opinion. My experience is otherwise. I just shot 60 rounds work-up 40 gr Nosler ballistic tip unleaded at starting to max loads of 844 @ ~3,500 fps and had consistent accuracy across each steps. These were around 1" groups at 50 yds. with backwind buffeting the target.

Twist:
"For normal lead-core jacketed bullets, a 1:9″ twist will let you shoot up to 73gr bullets. Since most .223 Rem shooters prefer bullets in the 50-73gr range, a good “do-it-all” solution is a 9-twist, unless you’re a Highpower competitor. . . . We’d only select a 1:7″ or faster twist barrel if we had a need to shoot the 90gr VLDs.
Barrel Twist Rate 1:14″ 1:12″ 1:9″ 1:8″ 1:7″ or 1:6.5″
Max Bullet Weight 55gr FB 65gr FB 73gr BT 80gr BT 90gr BT VLD"
http://www.accurateshooter.com/cartridge-guides/223rem/

I have found all the information on that site to be reliable and objective.

July 15, 2012, 05:57 PM	#8
Marco Califo Senior Member Join Date: April 4, 2011 Location: LA (Greater Los Angeles Area) Posts: 2,598	4r That may be your opinion. My experience is otherwise. I just shot 60 rounds work-up 40 gr Nosler ballistic tip unleaded at starting to max loads of 844 @ ~3,500 fps and had consistent accuracy across each steps. These were around 1" groups at 50 yds. with backwind buffeting the target. Twist: "For normal lead-core jacketed bullets, a 1:9″ twist will let you shoot up to 73gr bullets. Since most .223 Rem shooters prefer bullets in the 50-73gr range, a good “do-it-all” solution is a 9-twist, unless you’re a Highpower competitor. . . . We’d only select a 1:7″ or faster twist barrel if we had a need to shoot the 90gr VLDs. Barrel Twist Rate 1:14″ 1:12″ 1:9″ 1:8″ 1:7″ or 1:6.5″ Max Bullet Weight 55gr FB 65gr FB 73gr BT 80gr BT 90gr BT VLD" http://www.accurateshooter.com/cartridge-guides/223rem/ I have found all the information on that site to be reliable and objective. __________________ ............