Welcome to 450 land! I have tried the gummies and didn't have good results, actually tried in two rifles without good results. By results I mean accuracy. My go to load is Hornady 350gr Flat Nose with 58.0ge H322. This duplicates factory Hornady loads, and shoots in two rifles under an inch ! I have shot Bear, Hog and many deer with this combo and if performs great. Please work up to this in your rifle as it is a max load! Gday