I have a 14 twist Swift and have been thinking of a fast twist .243 Middlestead or Swift for medium size game. The problem I find with .224 is the same with 6mm, there aren't many (any?) high bc hunting bullets that will take the high impact velocities consistently. I'd like a 75 grain .224 mono hunting bullet or even a very good bonded bullet with a bc around .450 that would work in a 7 or 8 twist, just like I'd like a 90 grain 6mm mono (or decent bonded) hunting bullet with a bc near .500 that will work in a 7 or 8 twist. But they haven't been developed yet, at least not by the large bullet manufacturers.
