6mm Grendel/243 LBC/6mm Predator/6mmAR & the 107gr SMK?

[Winny94]

I have some leftover 107smks that i want to run through my new 6mm Predator setup. I dont have modified case yet, so im wondering if anyone else runs that bullet and what length are you running it at? Basically just fireforming & finding charge weight, so it doesnt need to give optimal accuracy, just a jumping off point.

thanks