I shoot factory loads 160 gr Accu Bond with my Savage model 16 7mm wsm. I have a Leupold VX111 4.5x14x50 scope, a muzzle break and sims recoil pad. It has factory stock and trigger. I can shoot 4" groups at 850 yards. You can get better groups if you want to load your own rounds. I reload for my 338 ultra mag that is full custom and can get 2" groups at 900 yards. IMO the cost of a full custom vs my Savage for about $1500 I would go with the Savage. A lot of cash for 2" difference.
Both guns are moa-sub moa at 500 yards and under