looking to buy 31356 bullet mold or if someone could cast some for me trying to get a hepburn to shoot a better group bullets need to be .313 dia

I have that Accurate mould and it is the bullet I use in a 32-20 BRC barrel on a Stevens 44 1/2 and in a 32 S&W Long lined Ballard. You can order it and slightly modify the diameter cast based on the alloy you will be using. There is also a version with a gas check if you are going to push the velocity or the barrel is old and a little rough. I have both designs in the same mould. The nose is a little longer and more streamlined than the classic 3118.

Oddly, my Browning 53 (deluxe Winchester 53 copy) prefers the 31356 bullet, too. That's another possibility for your 35-30 for a slightly lighter (than the 125 grainers) bullet that can be driven faster.