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Old 07-21-2015, 9:32 AM
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ar15barrels ar15barrels is offline
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Originally Posted by LynnJr View Post

The floating bolt head is used to keep the locking lugs engaged while firing. On a typical Remington 700 when the lugs are lapped there is no trigger in the action. When the gun is put back together the 22-28 firing pin spring holds the bolt all the way up in its bore and upon firing it drops back down creating uneven lug engagement and creating unwanted vibrations.

The floating head eliminates the locking lugs coming on and off of the lug abutments.

On a 700 with only 0.002" bolt body clearance, this is not an issue to worry about.
Factory guns have around 0.008" clearance though.
Randall Rausch

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