The premium bullets work, and work better than the older bullets. Not always needed, but if shooting at extended ranges the difference is dramatic with some of the newer high BC bullets. Or shooting larger game with calibers traditionally considered too small. A 243 loaded with copper will do about the same damage as an old school 180 gr 30-06. If you have a 30-06 load it with cheap 180 gr bullets and go kill 400 lb hogs. If a 243 is what you have it is cheaper to buy premium bullets than buy another rifle. Plus a lot of folks are finding that it is nice to shoot a rifle with 12-15 ft lbs of recoil with good bullets and get the same results on game that used to require a rifle with 20-25 ft lbs of recoil.