There are many more fundamental issues that you need to learn about and become proficient at, before you even consider a tuner. If you are new to reloading, you need to master that, and beyond that finding the best load for your rifle. Then there is the rifle itself. I know of no one who is doing serious center fire accuracy work who is working with a factory Winchester barrel. This is not to say that yours will not do well or that its current performance cannot be improved upon. Then there is the matter of how the action fits the stock. Factory actions are generally heat treated after machining and as a result may not be perfectly true. There are other issues in this area, but this one relates to fit with the stock, which can have a marked effect on accuracy. My point is that the pursuit of accuracy has many related aspects, and that you have a lot of fun ahead of you learning about them. I would put the thought of muzzle brakes aside for a while, and learn more about the other factors. Good luck with your project. If you have specific questions, I encourage you to ask them here. You will probably get some very good answers. Now I have a question for you. What sort of average accuracy are you currently getting?