Originally Posted By Molon:
The Colt 14.5" M4A1 SOCOM barrel used in this evaluation was free-floated during testing using a Daniel Defense Omega free-float railed handguard. Using the match-grade hand-loads, I fired three 10-shot groups from the Colt SOCOM barrel at a distance of 100 yards. Those groups had extreme spreads of:
0.90”
1.02”
0.93”
for a 10-shot group average extreme spread of 0.95”. All three of the 10-shot groups were over-layed on each other using RSI Shooting Lab to form a 30-shot composite group. The mean radius for the composite group was 0.35”.
The smallest 10-shot group.
http://www.box.net/shared/static/r9jgrq14zn.jpg