Botting ranging guild vs Rock crabs

Hi, I've botted to 73 range at the ranging guild and I'm wondering if doing 73-85 with a cannon and iron knives at the ogre cage or rock crabs will give me much more xp?

 

Can you bot with a cannon? If you're looking for speed I'd go with cannon + knives but if your autofighter can't do cannon then you're probably better off at range guild.

 

I'd do it by hand with cannon, a few range pots and iron knives.

I'm just trying to get 85 range as quickly as possible.

I could overnight at the guild in addition.