Um a lot of that will depend on the gun too. Both will kick more then 06 or 7mm but if you use a heavier gun with a wood stock as opposed to a light gun with a synthetic stock you are going to get different results. The lighter the gun, the more the kick typically. I shoot a .300WSM, with a stainless barrel and a extremely light synthetic stock, it kicks like a mule as my friends say. I am used to it so it does not bother me one bit. Its my pack rifle so the trade off is lighter gun more kick, but less weight on my back when im walking 10 to 15 miles a day. I have shot both the 300 win and ultra and i can honestly say i did notice much of a difference, maybe the ultra had a little bit more kick, however both guns were from different manufactors so its hard to say.