While accuracy is very important speed is important to. If your speeds are to slow you may as well go to a smaller caliber. No good running a 180 gr in a 300 magnum at 2800 fps when a 30 06 will do the same. It is nice to see those tight, slightly enlarged groups but at the end of the day around the one inch group is more than adequate. A one inch group at 100 yards is still a 6 inch group at 600 yards, which is probably further than most can shoot animals at anyway. Try and experiment so you get both speed and good accuracy that way you will have a really good load for everything.
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