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Posted: 2/14/2010 4:23:06 PM EDT
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I just built my latest AR. I consider it a medium-long range AR, its not free floated but wondered how much better is free floating.
Has anyone ever done back to back tests using free floating and non free floating ARs with same ammo and same shooter? Here is my AR 
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| It doesn't really matter if you only need to shoot minute of man out to a reasonable distance. If your concerned with shooting tiny groups, then it matters. The reason for free-floating is because of harmonics. Now, a non free-float rail will effect harmonics, but not accuracy by itself. Its the force you put on the rail such as a bipod or shooting offhand. If your not consistent with the forces you put upon the rail, your accuracy is going to suffer. |
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Quoted:
In Green Eyes and Black Rifles Kyle Lamb states that depending on the amount of pressure applied one can move the POI 4" at 100 yards with a non free floated barrel I have experienced this first hand with a tensioned sling. His estimate is quite accurate and mirrors what Timothy Mullen writes and I have experienced (With the gov. profile barrel). I think it would be less with a bipod, but when one starts using a bipod one is expecting groups to shrink so any shift in POI will matter. |
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With a free float on, it's possible to grab the end of the barrel and watch it flex inside the float tube as you put pressure on it one way or the
other. Quite a bit of flex actually with an m4 profile bbl, so yeah I would venture to say free float can make quite a difference. |
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