I am loading for .44mag, but I guess the answer would cover any caliber...
I am loading Dardas' cast 200gn RNFP's and 240gn SWC's. I am trying bullets sized larger, (going from .430" up to .432") to see if that will solve my keyholing issues from a Marlin lever. Also for a Ruger SBH that leads the barrel like nobody's business with my cast stuff so far.
Should I keep the powder charges the same as listed data for the bullet weight?
The loading manuals list the cast bullet diameters for the .44's I'm loading at .430", would bumping the bullets up to .432" have an effect on the powder charge?
I'm thinking about the fatter bullet sealing better and pressure levels, or with the smaller bullet I guess the pressure was slipping past the bullet? (sorry, thinking out loud there...)
I don't load the high end of anything, I usually use mid range load data.
I'll be using 2400 and Titegroup or Win 231 powders.... and just for plinking/target shooting out to 100yds.
Thanks for any advice!