Detritus
Member
308's only push between 2500-2700 average which is sufficient for 1000 meter shots. So if a .223 is traveling at over 3000 fps its going much faster with plenty of velocity to target.
Muzzle Velocity is NOT an accurate indicator of downrange Velocity When comparing two different cartidges. Espcially when bullet weight doubles from one to the next (80gr is heavy for a .223 and 155gr is considered light in a .308 unless it's for Palma). there IS an inertia component where the heavier, longer, (and usually because of the previous two) better BC bullets have an advantage.
it's like saying that a yugo and a Mack truck both going 65mph will stop in the same distance with the same amount of brake pressure (Drag). Physics does not back that up. When exposed to the same amount of drag, for a given speed, the lighter object will decelerate at a higher rate than the heavier one.
Nor are your statements backed up by the actions of those shooting Long range competition. Very few shooters choose to use .223 past 6-800yards unless forced to by circumstance (unit/agency issue weapon, etc).
.223 is very marginal for anyting beyound 800 even at it's upper limits. 1K CAN be done with a .223 but it is an uphill fight. there is a reason .308 is the dominant round in F-T/R, .223 just makes for too much additional work out of the shooter on and off the range compared to .308.
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