My 6.5 Max is on a light hunter build, 26" with carbon stock and LHT 4.5-22. I also have a Bartlein in 6.5 Max on a Tikka in a chassis with a G3 on top, in a bit heavier profile cut by Bugholes. They both like the same loads and COAL, and shoot pretty close - the Bartlein is a true 0.25", with lots of groups in the 1's and 2's. The C6 is a true 3/8, with some groups in the 2's and 3's. So, given the difference in weight and scopes, the barrel difference could just be me - although I am comparing close ranges inside 500 yds. I've taken the Bartlein past a mile, but no need to try with the hunter, and unsure if the accuracy would hold up as well at further distances.
It also took 3-4 mos to get my barrel - as quoted when I ordered it.
Here is a control group with Berger 153's, followed by a seating depth test of Badlands 135's...
View attachment 8038733View attachment 8038734
***Rich recommended close to the lands - forums said not with solids... see who was correct...