The 250 AccuBond in 9.3 isn't to bad at 0.494 and the 286 Partition at 0.482. Good BC's for hunting bullets.
If your looking for BC's in the 6's and 7's in medium calibers you will be looking at 300 to >400gr bullets, to drive these at meaningful speeds, 2800 fps or more then you are looking at burning 100gr of powder +.
Generally not practical for most game animals. Further more a high BC smaller diameter bullet like the a 243,264,284 and 308 can be very manageable ,which insures more consistent precision, which negates the requirement for uber power as the bullets can be surgically placed. There is a balance though.
Most animals that are regularly hunted only require a precision hit with a bullet between 24 and 30 caliber thus the high BC's for long range.
