Theres lots of bologna floating around about accuracy and hunting rifles. Everyone doesnt report their accuracy in the same terms. Some folks will tell of the best group they ever shot with a given rifle and some will get close to reporting what the gun will do in every case. Your groups sound fine to me. I think like Stubblejumper says that you may have a bedding problem. A properly bedded rifle shouldnt walk shots off as the barrel heats up. The dispersion will increase but in a random fashion. If it was me, I would read up on bedding and start using handloads. Those two things would be most likely to tighten the groups I think. If its shooting 2 inches with factory ammo, you will be able to get some 3 shot groups under an inch without much difficulty after fiddling with the bed and trying some different loads. Good luck.