Re: Two questions
A mil-dot is a scope with a series of dots running along the crosshairs (up & down) spaced at equal distances. The spacing is one minute of angle.( 1" at 100yds, 2" at 200yds...ect.)These are used both for holdover points and for general to very accurate rangefinding depending on how good you get with one.
The 308 question I can't help with, don't own one....Yet. But to get your most specific answer the folks here will need to know your intended use, hunting, target,competition.
Free floating a barrel means to open up the barrel channel in the stock until nothing is touching the barrel from the recoil lug forward.
Hope that helps some
[ 10-13-2004: Message edited by: winmagman ]
Ignorance can be treated with education, sadly there is no cure for stupidity.