Where is best place for a Hecatomb Proc? (FA/DB)

I've got a character I'm working on. He isn't well built and has every power in both primary and secondary. His ST attacks mostly have Smashing haymaker and mako (quad+proc).

But tonight I got a hecatomb drop.

Like an idiot I usually just use attacks randomly but I'm trying to get in the habit of Blinding-AttackVitals. I've tried experimenting with sweep and while it is better aoe, I never seem to do it right.

Any recommendations where to put the hecatomb to maximize its damage for either AV or Sweep as a primary combo? Is there one that works best with both?

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"Hmm, I guess I'm not as omniscient as I thought" -Gavin Runeblade.
I can be found, outside of paragon city here.
Thank you everyone at Paragon and on Virtue. When the lights go out in November, you'll find me on Razor Bunny.

Traditionally procs go best in the attacks you repeat most rapidly -- more chances to activate. In this case I'm not sure, because chaining together combos means you won't just be spamming the rapidly-recharging Tier 1. Maybe Blinding Feint, since you'll be trying to stack it anyway and you'll use it before either combo?

Regarding the best way to get the combos down, I finally systematized my tray, putting the powers for the Attack Vitals combo on 1-2-3 and the Sweep combo on 4-5-6. I keep BF on the next tray up, so it's alt-1 (same place I habitually put Build-Up-type powers). Chaining the combo is a little easier if I'm just working my way down the row.

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If we are to die, let us die like men. -- Patrick Cleburne
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The rule is that they must be loved. --Jayne Fynes-Clinton, Death of an Abandoned Dog

Thanks!

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"Hmm, I guess I'm not as omniscient as I thought" -Gavin Runeblade.
I can be found, outside of paragon city here.
Thank you everyone at Paragon and on Virtue. When the lights go out in November, you'll find me on Razor Bunny.

Definitely put the Hecatomb proc in your Tier 1 Secondary. You're going to be utilizing your T1 for bruising, anyways, and your T1 will be your most rapidly recharging attack--and that is important because Hecatomb already has a 33% chance of firing. Factor in that damage procs don't do any more damage on a T9 than they do on a T1, and the choice is obvious.

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