roughly what is the drop rate of these? or how many hours to get one with/without cannon

and what is the best way to kill these drawf guys, i've almost done the quests for it and yeah.

stast are

90 atk

99 str

71 def

91 hp

60 pray

82 range

94 mage

70 summon

as far as i know my 2 friends they go and always go with cannon coz its milti combat and its hard to find a empty world

 

But my friend has seen people go there and get a pick in there like first 5 kills also seen people been there days and not get one so its all luck i think.

ok coz i'm trying to work out if i was to use say 10k c balls (3m) and take me say 10 hrs to get 1 if ti's worth it or not.

Be sure to take into account getting hand cannons as well, they are a much more common drop and are skyrocketing right now, last I checked they were 260k a pop. You may find you will make more off the hand cannons than the picks