We use both for silhouette shooting, and both work great, but I have noticed that .308 Win is becoming less popular than it was even 5 years ago.... the 7mm-08 seems to be usurping the .308's position to a certain extent.... mind you, the old 6.5x55 isn't exactly turning the world on it's ear either... However, wherever I am in Canada, I see lots of 6.5 Swedes around, so it is unlikely that it will disappear anytime soon....! does the Swede have more downrange energy than the .308 Win...? I have heard that lots in the past, but have never to bothered to look it up in print.... I like the Swede mostly because of all the lore I heard about them when I was a kid..... and I like the.308 because it is slightly shorter, components are perhaps slightly more common, and there is so much published data for the .308..... and so many reloading components variations and recipes that we can always find something to make it all work..... silhouette shooting isn,t so much about the weird and wonderful and unique as it is about "Holy ####, we better get all this loaded up and ready to go, we gotta load the trailer and drive 14 hours to get there, get set up and shoot at 9 AM...." so, the easier and more reliable everything is makes a big difference...
I'm the only one who still fires the .308 on our circuit, though.... most have moved over to 7mm-08, and a few others have started with .260 Rem.... it's a matter of recoil, everyone says, but since we load everything down anyway, I personally don't see the difference.... it's a funny thing with firearms.... we all have our favourites, and we all have very good motivations, rationalizations, etc. as to why these calibres are possibly the best....but I have sure noticed the last 5 years how fads and fashions are so influential in the firearms industry... mind you technological advances in manufacturing and engineering certainly are influential.... especially when these techniques are used to manufacture guns and parts to make them better, stronger, and cheaper.... powder development has made some of the old cartridges much better, more potent and relevant today.....