I have two beautiful new moulds that I am unable to find load data for. The powders I plan to use are AA2520 and 5744.
The moulds are: 1) RCBS.378-312-BPS and 2) Accurate Molds #38-345AG
The calibers I'll be using them in are .375 H&H (mainly) and .38-55.
I would really appreciate any help here.