Twist and Headspace for Ruger 44

[deadeyedick]

Can anyone tell my what the twist is in my New Ruger Super Blackhawk 44 mag and also the headspace. I can't seem to find this nfo anywhere and need it for some ballistic software.

Thanks in advance!!

 

[steveno]

I'm not sure why headspace or the twist would be a requirement for a ballistic program. I think the twist is 1 in 22.