IMO, not much diff between the two. I shoot or have shot most of the 7mm, never been a 270 anything guy. The 280ai will do what ever the 7WSM will do, as will the 7remmag. My fav is the 7mm Dakota & for non magnum, the 280 is tough to beat. I get 3000fps w/ 140gr bullets & 2800fps w/ 160gr bullets, a pretty good rig for just about anything in NA hunting. Better than a 270, nah, just diff.
"Given adequate penetration, a larger diameter bullet will have an edge in wounding effectiveness. It will damage a blood vessel the smaller projectile barely misses. The larger permanent cavity may lead to faster blood loss. Although such an edge clearly exists, its significance cannot be quantified".
Last edited by fredj338; 09-21-2010 at 13:18..