That group is closer to 3/4". I was going to write send it back to Nosler but that group shows promise. I was shooting one rifle and said mentally to myself G-dang the bullet holes aren't even touching how the hell can I sight in my rifle. On closer inspection it was a 1/4" group and I pronounced it good to go.
The bigger the case the less chance of hitting a good load on the first try IMO, I would try some slower powders and then tweak the seating depth. Or check seating depth first and then try some slower powders. But you could just stop where your at and be fine.
