I realize you might be attached to the 30-30 but I would definitely look at more of a long range weapon. 25-06, 260, 100 WM, 7mm RM.... something that can reach 500 yards and still have some knock down. Most of the coues deer that I have seen do not hang out at the under 200 mark which you pretty much need to be at with a 30-30. Spend some $ on your optics also... it is an expensive hobby.