I just finished my first batch of reloads ever , and this is the rifle I loaded them for. I have the same gun in same caliber. Anyhow, At 100 yards (and I am not joking, I put 7 shots into .82 inches) I then took a break, and shot another 20 rounds at the 200 and 300 yard metallic silouettes. I hit all 20 I shot at with resounding "DING" sounds. I say this, because I am not a wonderful shooter, I have average skills, and I was using a medium quality scope (Bushnell Elite 3200 3x9-40). So GREAT accuracy is able to be achieved with this rifle, I just find that the light weight of it limits me to about 7 shots before I need a break.
If you are wondering what load I was using (in case you get into reloading in the future..... I was using Nosler 200 grain Accubond bullets over 70 grains of Alliant Reloader 22 powder. The brass was Winchester and the primers were Winchester magnum large rifle. The overall length of the cartridges was 3.34 inches.
I now have my forever hunting load, I wont need to tweak anything, and a 200 grain bullet can knock the best of them down. Thats where the .300 win mag shines (in bullet weights over 180 grains)