I once found some really good camo tape for things like that. It stuck pretty well even to gun barrels and wouldn't leave a sticky mess afterward. Wish I could remember what it was called - I haven't seen any in years.

To the OP: I'm a Weatherby fan personally, but I've heard a lot of good about those Tikkas. If your local store has both in stock, see if you can shoulder both of them to see which one feels better in your hands.