Re: General Ballistics Question
W/o going into mass details, the general idea is that the 308 cal bore is bigger than the .270 bore, therefore there is more Cubic inches of space for the powder to burn. Think of it as having a longer barrel. This is one reason why I personally dont use a 7-08 or a 243 win. These are both necked down from the 308 win case. You can push heavier bullets with higher BC's faster with the same barrel length in 308 vs a 243 or 7-08. I am not saying that either cartridge is useless, everything has its place. I admit I am bias when it comes to the 308 bullet vs the 7mm bullet. 7mm rifles need much tighter twists to stabilize the bullets which generate alot of torque upon recoil and they are typically barrel burners, they recoil hard and they are hard to get accurate (typically) Then we go back to heavier bullets, more energy, higher BC w/more velocity with 308 cal vs 7mm. Same barrel legnth and all. The 308 and 338 cals make sense to me
[ 12-13-2003: Message edited by: meichele ]
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