Nice. I agree with shooting in bursts. I usually do bursts of two to four for any action. There'll always be one that's superior. In you case, getting just the right amount of smoke from the barrels.
I would have shot almost everything at +1EV (Raw of course) and then pulled the exposure down in post and added a bit of an S-curve and/or some Contrast. You'll increase your shadow detail and dynamic range tremendously by Exposing To The Right (right of the Histogram). Of course, don't blow out any important highlights.
What ISO were you at? I'd probably use 400 or 800 as my default with that camera, whenever there's any action. Reserve ISO 100 for scenic, portraits and other tripod shots.
Which AF pattern did you prefer for that stuff? I'm betting on 61-points for that.