Hey Josh,
From everything I have learned about springers, a new spring, or just breaking them in can cause a change in the pellet they like.... But it may not ?, somestill likethe same pellets, there is no way to tell. If there is a change in accuracy, they can go back to liking the same pelletafter the spring settles in, she may well love the R10's. So hang on to your pellet sampler, you will never know when you will need it.
Bill