Depends on the rifle mostly, and the shooter. Ammo that won't go under 2" in one rifle may well go under an inch in another!It might be a change for the good. I've got some factory Remington 30-06 coreloks that are about 10 years old. Won't shoot under 2 inches in either of my rifles.
You'll be interested in reading thisCan I expect remington ammo to perform the same since it is manufactured by Vista Outdoors/Federal?