I have an old Lee Enfield #4Mk1 that had the stock chopped and was fitted with am aftermarket Parker Hale free float barrel. I bought this 30 years ago and except for a couple of times deer hunting, never really shot it. I am thinking of digging it out and shooting it again. Anyone have experience with these? What is a realistic long range for them? Any particular ammo better than others (I do have several hundred rounds of surplus and hunting ammo).