I've been messing around with this over the past few months. I have close to 500rds on the barrel now.
I was originally having some issues with velocity consistency, but upon recommendation of Logan, I loaded some rounds with new brass. The original brass I was using had 10-12 firings of 6.5x47, and using a .282 bushing, the necks were very loose. I then went to a .280 bushing, but I don't think that was a good idea....
Using new brass, my groups tightened up significantly and so did my velocity numbers.
The original lot of 500 bullets I started with ended up shooting extremely well once I started shooting with new brass. With 36.4gr of varget out of a 26" barrel, 0.030 off the lands, I was getting about 2,807 fps with virgin brass. With 1x fired brass, it bumped up to about 2,850 fps.
With the new lot of bullets, I saw a lot lower velocity (2,812 fps vs 2,850) for some reason, and not as consistent groups. I'm planning to do some more testing this week with those bullets, and see what happens.