I've been trying to get someone to tell me what the Savage engineers had in mind when they used the 9.25 twist barrel in their .243 Winchesters. I've sent emails to Savage "tech support," but have gotten no response. As a reloader, I've got 6mm bullets from 58 grain to 105 grain at my disposal, but am curious to find out what bullet length and weight the Savage engineers were trying to optimize with the 9.25 twist. Does anyone know?