I have a Ruger American and it has a 1-8 twist. It will stabilize 70gr Speer and 77gr Sierra Match HP very well. Would like to try the Nosler 70gr AB. Let me know if you try them. Dan.otter25":80u2ipl1 said:Has anyone shot the 70gr Acubond in a 1-10 twist. I would like to try them in my Ruger American