In theory if you keep your shots to about 100 yards, you shouldn't see much difference. However, even bullets of the same weight can shoot to a different point of impact when switching between brands or even lot numbers. If it were me I'd sure try and find a time and place to at least fire one shot at 100 yards. Just a few months ago I switched from Winchester to Remington 150 grain ammo in my Remington 700 30-06, and the point of impact was about five inches to the right.