I was wondering (instead of keeing a flat 1:10" the entire barrel length) if increasing the rifle twist rate as the bullet travels down the barrel would be of any benefit, like increasing velocity. For example, the rifling at the throat has 0 twist rate, then gradually increases to 1:30" @ 8" of barrel length, increasing to 1:20" @ 16" barrel length, increasing to 1:10 @ 24" barrel length,
The idea behind this being that faster twist rate = high chamber pressures, so having a lower twist rate closer to the chamber (where the pressure would be highest) would lower the overall chamber pressure (kinda like a pseudo freebore, without the decrease in accuracy of the bullet slamming into the rifling)...so then maybe you could use more powder? Or something like that. My google-fu hasn't been able to find anything about this.
The idea behind this being that faster twist rate = high chamber pressures, so having a lower twist rate closer to the chamber (where the pressure would be highest) would lower the overall chamber pressure (kinda like a pseudo freebore, without the decrease in accuracy of the bullet slamming into the rifling)...so then maybe you could use more powder? Or something like that. My google-fu hasn't been able to find anything about this.