Having accumulated several more Ranked games on Gragas I've noticed that if you don't have your entry angle just right on the Red Brambleback and Blue Sentimental camps with Body Slam you are liable to clip a Cinderling or Sentry and only get the damage off on the critter that you hit, leaving the other two creatures in the camp undamaged. This is mostly only a big deal on your first clear as on subsequent clears you'll bring more damage so you have more margin for error.

This can also happen with the Murkwolves or the Krugs if you Body Slam into that camp from a weird angle.

So ideally, just make sure you are lined up to hit the entire camp with your Body Slam if you are going to use it to cover the distance between yourself and the camp.

Or

1) W - Drunken Rage before you get to the camp
2) Q - Barrel Roll before you get to the camp
3) Empowered autoattack on the biggest creep in the camp (use attack move to ensure you hit the big creep)
4) E - Body Slam

Step 3 should make sure you are lined up so all the monster in the camp receive damage from body slam.

Due to its positioning behind three Raptors it is hard to get damage off on the Crimson Raptor with Body Slam unless you purposely enter the camp from an angle. And since all together the three raptors do more damage than the Crimson Raptor you usually want to kill off the raptors first.

So for that camp I do the usual sequence of Swig, Barrel, Body Slam, Empowered auto on Crimson Raptor and then auto any of the Raptors that are left alive or simply let Immolate deal with them once I have Enchantment: Cinderhulk while I focus the Crimson Raptor with my autos.