The simplest, would be take the max charge of 4895 for a 120 grain bullet in a 250 Savage...
use the same charge of 4895 in a 308 case with the 130 grain bullet...
if you don't have enough velocity to fit your needs, slowly work up from there..
the recoil would be closest to what she is use to..
"........and I ain't asked any pardon, for anything I done!"
"To anger a conservative, lie to him. To anger a liberal, tell him the truth." —Theodore Roosevelt"
"why do I carry a 45? Because they didn't make a 46.."