Some times a new rifle will have some loosness in the action to stokc screws scope mounts ect. Check the rifle over, sometimes they need to break in as well so don't look for real great groups for a hundred rounds or more then start trying to find a load combination for groups. But you also need to remember that every rifle is a law unto itself what works in so and so's rilfe probibly will not work as well in yours, and the load he got lousy groups with in his rifle may be a tack driver in yours.
Much of the fun and challenge of handloading is working up YOUR loads that group well in YOUR rifle.
From what your saying I would check the rifle make sure it is tight in every connection. Very few factory new firearms have major flaws it is usually some thing minor like loose screws in a mount or generally poor scope mounting that cause bad goups. As long as you do your part sight picture, breathing and trigger squeeze.as well as proper positioning dopeing wind and mirage ect.
BTW try a lower power setting on your scope lowest to lower end of midrange works best.
