i took my 45-70 xlr to the range today, and shot a 1/2 in group at 100 yards with a 540 gr. cast bullet. its the load that garret recommends, and does it work. not bad recoil at all. i can see that this load of 40 gr. h322 is a thumper. its the best cast load i found in a 45-70 yet. i pretty much tried all cast weights.