It will be luck of the draw. You can have consecutively numbered identical rifles that will not like the same load. So trial and error. Some if not most rifles will shoot a bunch of loads to hunting accuracy
Shoot several different brands and you will find which one your rifle likes best. My Mod 88 Win in .308 likes Rem core lokts in 150 grn and they have done a great job putting deer on the ground, but not all rifles like them. The best suggestion you will get it to try several and then decide.
Just an example , I bought a used 25-06 for deer years back . It's a target version , so I knew it should shoot well . I wanted to stay with 100 gr. or larger bullets for deer . After testing 4 different manufacturers loads , it still wouldn't group less that 2 inches at 100 yds. I took the rifle back to the dealership thinking they would have to have their gunsmith go over it and find out what may be wrong . He found a box of Winchester 90 gr. Expanding points for me to try instead . The gun printed clover leafs at 100 yds. and 1 inch groups at 200 yds. It took $120.00 worth of ammo , but now I know what the rifle likes .
You should have bought 2 from the same lot number.At this point you may not have the time to test several different brands/bullet weights.Make sure you sight it in with the ammo you are going to use.
I am going to the gun club today to shoot and sight it in. I don't need to use it for deer hunting this year if I don't want to. The only reason I purchased it was because it was too good of a deal to pass up. $229 for rifle and scope... I know it isn't the greatest gun in the world and the optic isn't the best either, but as a backup gun I think that price tag makes sense.
Excited to get out on the bench and see what it likes to eat.