Just shows nothing is necessarily straightforward.
My initial rounds for this rifle were made to the max OAL @ 3.063" and no, they wouldn't chamber. Seated the bullet a bit deeper, still no joy....just more damaged cases. So I tried factory RWS 160gn rounds...nope, not a chance.
So then the thread started, finally resolving the problem.

The whole thing is sweet as could be now.....I just want to find a 16ogn load that works, along with a 140gn load.
Going to Scotland to hopefully take a roebuck at the end of April...we'll see!