.45 cal target barrel twist....

[Lord Eoin MacKenzie]

I am looking at making a .45 cal. target rifle from a p53 Enfield.   what twist barrel and are the pedersoli  whitworth or volunteer  rifle barrels available?    thanks

[Ranch 13]

 You would do well to put either and 18-1 or 16-1 twist barrel on the rifle.

[Kent Shootwell]

Twist should be calculated form the length/ weight of the bullet and the velocity. Black powder restricts the velocities to 2000 FPS or less so the length becomes the guide in this case.