@Orpackrat From what I’ve gathered on the 2 rounds, the 6.5 has a higher ballistic coefficient and less recoil than the .308. That being said the 6.5 ammo is higher in cost and isn’t as readily available as .308. I mean you can buy .308 in a lot of country gas stations, if you’re a hunter, that is a huge plus. One notable mention is that you CANNOT shoot 7.62x51 NATO out of a .308 rifle. The NATO rounds are loaded to a much higher pressure than .308.
I think the 6.5 drops 46 or 48 inches at 500 yards with the rifle having been zeroed at 200 yds. The .308 drops like 53 or 56 inches from what I can recall at 500 yds when the rifle is zeroed at 200 yds. So not really a huge difference, but 10 inches of drop is the target. I don’t know.
My take away from the the whole thing is that you have to practice with both. One will not make you inherently more accurate than the other. I have an M1A so I already have a flat shooting rifle. But if I didn’t, I would probably buy a .308 for target shooting, because I believe in accuracy through volume; practice. I can afford more .308 than 6.5 so I believe that I would be more accurate with a .308. But then again I’m 6’6" and 250, and shoot a .300 Win Mag in a rifle that’s in a 6.25 lbs rifle, so recoil is something I can deal with.
I also am planning on buying a 6.5 creedmoor for hunting mule deer and antelope out west. Since rifles were made people have been looking for the perfect caliber, and arguing about it, just the same as the outdated 9mm vs .45 argument you find in self defense forums. The closest I have ever heard in settling the argument for a perfect rifle is biased for hunters in North America. Its the .338 magnum, because if you reload you can load light enough to kill antelope with low meat damage, and heavy enough for grizzly bear.
So basically can you afford the thousands of rounds you need to be a good shot in 6.5? Or do you subscribe to the idea that less recoil keeps you shooting longer? It’s all personal preference.
Also despite what gun writers have been saying the .308 and the 6.5 are not the best for elk. A lot of guys that guide will not take people out with anything less than 7mm mag or .300 WSM or .300 Win Mag. So more food for thought depending on what you plan on hunting later on.