Any more information here like links to some data?

NOE and Accurate offer 310 cast bullet molds. I have a Accurate. I have 358 Win, 35Whelen and 358 NM firearms.
Twist calculators say 1:16 works fine for the 300g. All mine are 1:14. But that always comes up.

Little is found across the webs and RL15 is the Whelen powder and us about all that is found. (I have 1/4# and no prospects for any more anytime soon)


CW