not sure if this is even possible.
I own both a ruger super red hawk 2.5 snub in 454/45lc
and a 454/45lc lever rossi ( one of the newer ones. she runs factory loads like a champ in both calibers)
im wondering if i can work up loads for each caliber that would work for both?
in other words a load for 45lc that will fire safely in both the pistol and rifle and a load in 454 that will fire safely in both
if so what surp powders and starting loads would you all recommend?