New member, THX. Please take a look at my first Combo Rifle. Mfg 1/1931, maker TBD. 16 gauge over 8x57JR.
If anyone knows the logo, input would be appreciated!

I need a starting load for IMR 3031, I have 3 rounds loaded up with 35 grains to play it safe, 296 gr SP, .318. Any ideas?
THX
SteveG

[img]http://https://www.24hourcampfire.com/ubbthreads/ubbthreads.php/galleries/18081937/first-combination-rifle[/img]

The bullet weight should be 196gr, not 296gr.

With the correct 196gr .318 bullet I would load 43 grains of 30-31, <<BUT, that's entirely up to you>>. I don't recommend any loading data. Get some IMR 4064 or R15 powder, and do yourself a favor.