All I did was clean up the barrel channel a little and the trigger pull a little, and now she shoots very nice. I am thinking it is actually more accurate than my vanguard (7/8 MOA) I had this rifle sighted in 1" high at 220 yds. I took a mule deer buck with it, the performance of rifle and cartridge was impressive. Right before dark, broadside shot the bullet dropped at least 6" from a center shoulder hold, very steady shot. The range was not determined but I believe it was approx. 350 yds. Broke both shoulders and exited. 130 gr. SIE. Pro hunter, 64.5 gr RL19 (do your due diligence).
ETA: I really like a rifle and cartridge that I can zero to allow a dead on hold out to 400 yds. Maybe high on the side if it looks like 400 but no daylight between the crosshairs and top of back. I have had great success with 270wsm as well as 257 weatherby 100 gr factory spire point. I do value the extra power of the 270wsm for long shots over the 257 but to be honest at 300 yds the weatherby has never let me down. At close range however the weatherby is so fast I have blown up bullets and lost a deer. I also have had great results at 200 yds or less from an old open sighted k31. 7.5x55 swiss is a real thumper. I like the 165 gr. Hornady custom ammunition.