ok theirs a few options here of course its going to cost youif you not already got "tri bot vip" then from there its pretty simple just use any of the combat scripts but have range gear a accumulator will make you save ammo or you could purchase the range guild bot and do that to 99 with profit
i cant really say i have since there is always a chance of ban and your more likly get to 99 with a secure script (paid for) if its for a pure either buy a bot for it or do it legit