If all you want is a plinking rifle, consider the 223 and 75/80gr Amax. This is a superb and fun LR plinker. Can be sub MOA at 1000yds easily.
It will get bounced in the winds more then the 6.5 but also costs 1/2 as much to shoot. Barrel will last 2.5 times as long too.
Wouldn't poke a pooch that far away. In fact, if you really do want to shoot varmints at that range, you need a whole lot more horsepower to get the job done.
I love my 6.5 and it is a great LR cartridge. Others are also have great fun with 6mm like the 6BR, 6XC/Lapua.
For cost and simplicity, the 260R and Swede might just be what you are looking for in a 6.5.
LeRoy, the recent reviews I have seen of factory rifles shooting the ammo, the velocities are 200fps slower. That is exactly where I would expect this case capacity to be - 123/120gr bullets around 2800fps and 2600/2700fps for the 139/140gr out of 24" to 28" pipes.
This would also yield very accurate ammo. We can all load out ammo to hero pressures to get some 'magical' velocity but missing the target doesn't excite me much. Neither does using a mallet to open my action.
Their primary market is service rifles type matches. Now the AR10/variants are using this case. You simply are not going to be able to run hero pressures is a semi.
In time, I expect this cartridge to fall neatly between the 6.5X47L and 260R. The variations in performance is equal to the variations between rifles based on the same chamber. None are going to outpace a 6.5-284 anytime soon.
I think the 120gr Amax might just be the best pooch popper in this cal and case size.
Jerry