PDA

View Full Version : rifling twist ?


38-72
10-08-2013, 12:17 PM
What rate of rifling twist would be best for a 416 caliber 420 grain bullet traveling at about 1200 fps using smokeless powder?
Larry Gibson
10-08-2013, 04:14 PM
Length of bullet?

Larry Gibson
WILCO
10-08-2013, 05:02 PM
What rate of rifling twist would be best for a 416 caliber 420 grain bullet traveling at about 1200 fps using smokeless powder?

http://www.tmtpages.com/twistrate.htm

As mentioned by L.G., you need to know boolit length.