I would vote Grendel as well. I shoot with with 16-28" barrels with hogs as my primary target. My workhorse guns have 18" barrels, but the 28" is the sweetest shooting gun I have right now. Recoil is tamed nicely by all that extra weight and length (plus the suppressor).
I run the Grendel in a Ruger American and am very pleased with the accuracy. I was just looking up loads for the Barnes 100 TTSX this afternoon: that pill at 2800-2900 with several powders. Will have to do a load workup. Mine sure loves the Nosler 120-grain BT.