I am looking for suggestions. My father used to shoot high school sharp shooter competitions in Illinois back in they day. 1960s. Rifle was a Remington 513t. He always regrets selling the 22lr. He is now retiring and I am looking for a retirement present for him. He will be using the new gun on a fairly regular basis to teach his grandchildren how to shoot as they come of age. I have about $600. Should I look for a 513t or am I better off getting something new? Will the 513t need continual maintenance? If new any suggestions?