Standard ammunition dimensions can be found here.

   

Input

Suggested Twist
Bullet Length   in INCHES : REVOLUTION*
    *Round Down To Closest Half Twist
Bullet Diameter   in
       
Muzzle Velocity   fps
Bullet SG  


Bullet SG Values:



  

11.3 Lead
10.0 Jacketed
8.9 copper
8.5 brass
7.8 steel