Reloading data for 7mm / 303 Epps Improved

[ATOM]

Have been thinking of converting a Ross 1905 to this (Bubba got at the rifle before I got it and it's no longer a collector's piece).

I have found sources for dies and a reamer, but am still looking for reloading data. Any ideas, please?

 

[jethunter]

7x57 mauser has about 5% smaller powder capacity and operates at similar pressure levels to the 303 epps. 7x57 data would be a good place to start looking.

 

[ATOM]

Thanks. Good idea.