yes id say get on the paper and close to the bullseye and then tinker with charges. when you find a good grouping one then you can fine tune your sights or scope...no sense in fine tuning when you will may find your gun like 90grs better and shoots it a little diffrently. fine tune after you find what your gun likes. make sure you clean between shots and load the same every time. same charge...same loading pressure etc. good luck