I think that you'll find that slower powders like 4064, RL15 and Varget work a little better with your lever extraction. One big trick to benching a BLR is to put the forward bag under the action, not the forearm. Don't forget a bag under the toe of the stock. Three shot groups will suffice with that light barrel. Also watch closely to be sure that your crosshairs are aligned vertically the same each shot. Without a wide flat bottom like bolt guns, the BLR is easy to cant or cock to one side without much notice. BOL