Lyman 49th lists the Trim To length of .308Win as 2.005 inches. That is 50.927mm.
I'd like to get an exact measurement from the OP. Is it "50.0mm" or is it "roughly" 50 and more like 50.5, 50.75?
Still happily answering to the call-sign Peetza.
The problem, as you so eloquently put it, is choice.
He is no fool who gives what he can not keep to gain what he can not lose.
-Jim Eliott, paraphrasing Philip Henry.