7mm Stw ??

[Chaser]

Happy New Year guys. I have a 7stw on a Rem action with a 27" Lilja in a 1 in 11 twist. The gun shoots great, .25", most of the time. With 82gr. of IMR 7828 and 120gr Nosler BT. The question is will it stabilize a 168gr bullet and if so what powder charge should I try? Thanks guys