False Muzzle

[Rick Mulhern]

Ok, went and got the mind sharpened up, dug out my trig book and crunched some numbers. I used .454 for a diameter as I was not quite sure what would be the best the bore or the grove so I just went down the middle. For a twist I used 18". That gave me an angle of 4 deg 32 min. If you were to cut the barrel with a wife EDM I figure you would conservatively loose a total of .020". That would give you a misalignment of .00158", probably not enough to really worry about. If you used a standard steel part off tool to cut the barrel off with I used .140" as a total loss and that would give you a misalignment of .011".
Hope this is of some help to you, or at least gives you some food for thought.
Sam

Thanks for your effort Sam! In the finality of attaining the finest accuracy possible I think rather than taking a chance on 'butchering up' a fine rifle and NOT having the rifling continuous throughout the false muzzle that it would be more beneficial to start with an extra long barrel and build according to the way Pope did his rifles. The problem would be to find a 'gun crank' with the equipment and patience to do the work!