told a co worker that i would load him up some rounds for 2 of his guns after deciding on a bullet weight he wants to use one powder for both calibers to keep his cost down (he supplies the components i do the reloading for now hes going to start reloading soon ) here what he has and what i have to spare

him
168gr.hornady a-max
cases

me
primers
powders i have :
varget
h4831
imr4198
imr4350
h335
rl15


i dont a podwer that can be used for both any sugestions or just tell him he's stuck with mulitple powders