Any change in components will change accuracy but hunting/protection accuracy is different than long range shooting. I usually start 1/2 way between max and starter loads. No need to shoot more than three "ever" for your projected usage. You may need more than a few trips to the range. There are lots of variables in loading, a critical component is also bullet depth. So start out with some moderate loads at factory length and work up and carefully while marking each three shot string. In my experience most rifles will achieve the best accuracy with less than a maximum load, but all are different. Do not focus on accuracy, but accuracy for your intended use. If you can hit a 6 inch plate consistently at 100 yards, you will have a rifle that will meets your needs. You may want smaller groups but that also comes with practice and refining your loads. It may take some time, we are always here to help if you need it.