I have a Remington 760 Gamemaster in .35 Rem, i was wondering:

1: Whats the maximum range for target shooting?

2: Whats the maximum range to cleanly kill a deer with the .35?
(my longest shot was 100 yards with it)

3: Can it kill an elk? and whats the longest shot you would take at a elk with the .35?

4: whats a good scope for under $50 for the Gamemaster in .35?
(currently i just have open sights)