I have a Winchester model 70 in 300wm that I’m considering a barrel/caliber change. I’m assuming that whatever I choose will have to be a long action chambering. The 7 Rem. Mag. seems obvious but my long range rifle I shoot is also in 300wm and I’d like something a little less punishing. Any thoughts? I would like this to be a flat shooter also. Maybe for varmint hunting but not sure. I reload so ammo availability isn’t a major concern. Thanks