Texhookem is correct.I have three friends that have the exact same model and year of rifle and all three prefer different loads.The owners are hunting partners thatbought all three guns at the same time and asked me to develop a load for them.I took one rifle and developed a load that shot sub MOA with that rifle but the other two rifles did not shoot nearly as well with the same load.I ended up using two different bullets and two different powders,but I found a load that shot MOA or better in each gun.Each rifle is an individual.