Nitro Express load data always welcome. I used RL-15 with filler for a while in a .470 NE Merkel, but found I liked H4831 better in that one too. If doing it again with a foam wad filler I would use Varget, about grain-for-grain same as RL-15, but better temperature stability and less lot-to-lot variation.
Thank you Sir. I shall load some of Sir Gerry’s big medicine and look forward to doing so.
