Gravity Fed Temp Variation.?

Assassin 24 here. I've seen close to a 50 degree difference between the bottom and top racks. The bottom rack is right on top of the fire box heat baffle. I don't cook on it. I use briquettes.

After a couple of years of cooking on it, I have a pretty good "heat map" and know where to put the food.

T&K small GF, 25 degrees. I cook at 300 and use all natural charcoal.

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My experience has been the same as Smoking Piney. I've learned that the bottom grate is more of a stove. I'll put a pan of baked beans on it for the last 1-1.5 hours and that's about it.

I also have about the same swing temps. The only difference is that I've found that the second shelf from the bottom runs pretty warm on the front right side (hotspot). I use that to my advantage.

Finally, I have recently begun putting a disposable aluminum cookie sheet over the outflow from the firebox. I feel like it's done two things:

1-Catches drippings
2-Really helps to distribute heat.

Hope that helps!

Have to test out the temp differences one day.