Roasting Times?

[FeralOne]

What is considered a heavy roast and what about a light roast?

I have been doing about 325 for around 30 minutes, but I think I burned my last pound of Mexican beans, yucky.

Is it how long you roast or what temp you roast at? A combination of length and temp?

Any input?

Thanks to all!

Andrea

Edit~ I should mention this is oven roasting.