Brazier damage is thought to have a base of [unknown?] Black Bile per shot, with modifiers that increase and/or randomize it; This damage is reduced when within the range of other Blazing Braziers. Individual braziers do considerably less damage but will critical hit far more often.
The Brazier have a capacity for 1000 ammo and requires Coal to fill the ammo. One piece of Coal adds 25 ammo, for a total of 40 to max the Brazier.
Take note that you do not need to "light" a blazing brazier, it will automatically ignite when it detects a crime near it, as long as it has coal. Crimes of vandalism immediately awaken braziers (and Torchposts). Light duration, when activated, stays on for exactly 5 minutes after a crime then turns off. Uses far less than 1 piece of coal. The effective range was confirmed by devs to be 120 pixels, which makes 11 tiles (11 pixels per tile).
To destroy a brazier you first need to use a full bucket of water on it. Then wait until it is destroyed by decay. To repair the damage done by the water you only need 1 Bar of Pig Iron;
Braziers have a purity which can be increased by using Unscathed Wood. An Unscathed Wood adds 100 ammo, but can be used even if the brazier is full.