OK...

So I have been in correspondence with a very well known smith about a 6.5 build. I'm not a novice around reloading, ballistics or competition shooting.. but for the life of me I cannot figure out how they are doing this...

it is a 25" barrel

Quote
We have had extraordinary success with the 6.5x47 Lapua shooting 140 Bergers right at 2900 fps

we are doing this safely with Vit N 560 41.5 gr CCi 450 primer and Lapua brass, 1 in 9" twist barrel.


am I missing something?

I could see 45.1 grs...but that is a very compressed load. 108% of capacity.