I have a line on a rifle chambered in 7mm STW.
The max. functional length for the magazine is 3.65.
How is that gonna work if I want to shoot 180 Bergers or similar.
My Kirby Allen 7STW is built on a Rem 700 and has a Wyatt's extended magazine box (3.820").
It shoots very well with 180 Berger VLDs set at 3.800" and 77.0 grs Retumbo.