Another neat aspect to the 350 is VERY easy and mild subsonic loads. 7g Unique and a 170 Hornady/180 PowerPoint (Titegourp works too). So it is easy to roll your own 35 LR. Win probably never realized they crushed the 300 BO.
Use Mag primers for more consistent velocities and do NOT crimp in a bolt gun. Over-crimping will cause case separations.
