I ordered 50 of each of 430gr Gas checked and 535gr Gas checked WFN bullets from Doc Holiday over at Marlins Forum today. I was wondering if any one has used these in a Rio Grande 45-70 and what would work best of the powders I have. Those would be IMR 4198, IMR 3031 and Reloader 7. I have new Starline brass, CCI LRP. If any one has loaded these where did they find the listings of min/max loads that will work in a RG rifle.