have these 4 unlocked on normal rumble
Arrg - 113CB (drops big bones)
Dad 101CB (drops big bones)
Skeleton hell hound 97 CB (drops big bones)
Black knight titan (drops big bones)
have any 1 of the following low level fillers that you can kill fast
count draynor 34CB
Sea snake 35CB
king roland 47CB
trapped soul 30CB
any monster that drops big bones has a 1/400 chance to drop a long bone and a 1/5000 curved bond these can be instantly handed in to a goblin after death to the dorgashan quest for 4.5k and 6.75k each
to kill all 5 once you get around 1.1-1.3k xp depending on your set
meaning you get about 70-130 kills of each in a hour depending on stats and gear
280-520/400 chances at a long bone per hour
280-520/5000 chances at a curved bone per hour
if you max in nmz with this boss and get over the 39m xp for 99 att str def then you would kill each monster roughly 32098 times
128392/400
321 long bones (1283k con xp)
25.7 curved bones (173.3k con xp)
math for 3 bosses below ignore as found a 4th
96296/400
240 long bones (960k con xp)
19.25 curved bones(130k con xp)
you might miss a few on the floor if you are hardcore afking but runelite highlights them so they are pretty easy to see
if there is a 4th or 5th nmz boss that drops big bones the chance increase a lot, I have not found any yet tho. (EDIT Black knight titan)
30-75+ construction free on a regular max main.