I've got a TC Omega and I shoot a 150 grains of powerdex pellets and 245 grain Powerbelt sadot. I can reach outto 200 with that load. I shot 1 of my bucks close to 200 yards.I've killed a 10 and a 13 point buck with that load and I don't see the need to change when it's working. But when the deer get within 50 to 60 yards it's going to shoot high.