While I know the idea of using interchangable components for reloading is attractive, to do so would negate the advantages of the .444 The slower twist rate would almost certainly limit the bullet weights you could use in the .444 and using lighter weight bullets (300 grains and under) would gain little (if any) advantage over the .44 Magnum. In fact, due to the increased velosity bullets of 240-265 grains might even perform poorer than in the .44 Magnum by overexpansion and under penetration.
To me, the .444 just crys out for heavy bullet loads of 350, 400 or even 425 grains. If the .444 had been loaded from the start with a good 400 grain bullet.....there would never have been any .444 -vs- .45-70 debate as they would perform in the same class. If you insist on a .444, then go with the faster twist rate, find some good 400+ grain bullets and give up on the idea of using the same components as the .44 Magnum. Or.....just go with the .45-70 and make your life much simpler.
