I have an older Remington KS Model 7 .350 mag with a 20" barrel that is bitch to shoot off a rest. It is light and hard to hold the forearm in a front and rear rest. I cannot shoot it with free recoil and 1 hand around the wrist. With 200 gr TSX's and TAC I have made more than a few 1 hole 4-5 shot groups at 100 yards despite that pencil thin barrel.
I had it bedded and pimped up by Kampfield.
What 1 hole wonder do you have?