Answered I don't have a Prayer

Nechyrael's are faster in terms of infernal ashes/hr, that is if you only use the regular method at black demons.

Technically speaking, you can lure a black demon on top of you while using a cannon, standing ontop of the cannon this demon will demon stuck and your cannon is free to attack other enemies. You can easily reload your cannon at this point without trouble. Doing this is technically 500 kills per hour. The problem here being you only receive ranged experience and it can get quite costly.

While there are other methods these two are the standouts of them all.

First off Good Luck with 99 Rc I'm almost finished 78-99 so I know exactly what you'll be going through

---------------------------------------------------------------------------

500 Kills per hour is a little extreme. Even cannoning in Edge dungeon with safespot and range is only maximum 300 kill/h and thats without banking.

To be honest if I was you I'd get 85 slayer and camp at Abby Demons in the Abyssal area reached via fairy rings, banking is fast and as they rarely hit you can just head there with full Void Melee + Bunyip/Uni (or Soul Split once you hit 92 Pray)

Feels like the same speed as slayer so ain't bad at all, add in the standard drops from Abby's thats an extra 200k or so per hour. Add in whip drops (which averages out at one per 3 hours based on 1/500 kill rate) then cash per hour is 700k or so + 150 Ashes.

Looking at about 50 Crimsons per hour so by the time you hit enough Ashes for 95 Prayer you'll have a lovely amount of charms, as well as the cash to turn them into pouches with some left over.

All in all, I'd stress getting 85 Slay above all else, Nechrayels/Black Demons are fast enough, but the banking speed is what's going to kill your collecting rate.

Final note: For optimum speed depending if you can use extremes or not: If not then bring a Dragon Battleaxe + 3 (4) Super Att/Def. Use the spec every 5 minutes and pot Attack and Defence. This keeps your Attack/Strength/Defence from dropping more than 1/3 of the boost instead of waiting for it to drop all the way back to your original stats.

If you can make Extremes or Overloads use them with the same time interval. Even with Overloads you make more back than you spend.

I'd also advise that you use Piety 100% of the time, Prayer potions cost next to nothing at the moment and the increase in stats improves kill speed by roughly 1/3.

There's my 2 (or maybe 10) cents. Hope that helped shed a little light on the matter haha.

PS: Apologies for my MASSIVE essay, I'm sleepy and can't stop rambling