I had a stainless marlin and it was a 1:38 twist and didn't like 300s. It shot the Speer 270 gd ok though. I sold the marlin and bought a ss puma 16" carbine and it handles fast and shoots my 310g hard casts well.

I still need to get my puma 480 ruger out of the box and see how it likes the 400's.

Bb