So this is something I wanted to bring up. Throughout the majority of Halo media, we witness Elite energy shielding being able to be taken down by small arms fire (seen in Halo: Reach cutscenes (a few AR rounds, a few pistol shots), Halo: First Strike, Halo: Nightfall (a few pistol shots), Halo 5: Guardians (just look at the opening cutscene), the list goes on and on). However, when you look at the Brute’s energy shielding, it’s a much more different beast entirely.
And yes, Brutes have energy shielding beofre anyone asks. Seen in Halo: Contact Harvest, Halo: Last Light and Halo 3.
In Halo: Contact Harvest, Johnson explicitly notes that Maccabeus’s shield manages to withstand the combined fire from 24 marines armed with MA5Bs and BR55 prototypes. This type of shielding is far, far stronger and superior to any showing of Elite shielding I can think of. And before anyone note that this may just be Maccabeus’s shields alone, in Halo: Initiation #1 we witness a Brute Chieftain shrugging off multiple rounds from a Warthog’s machine gun and later AR fire from point blank range. That’s a hell of an amount of firepower that a Brute can withstand.
This is something I find to be rather interesting, especially when you consider the fact that the Prophet’s had restricting numerous technology (such as the Assault Armour)m which hold back the Elites. Yet, for some reason, the Prophets are willing to give out such advanced technology to the Brutes, despite the latter being a space faring race for only 60 years. Then again, Brute Power Armour doesn’t actually augment the Brute’s strength, unlike the Elites (Halo: Encycopedia), so more could’ve of been added to the shielding systems as the Brutes don’t exactly have a need for augmenteping their strength, that they are the strongest species in the Covenant baring the Hunters.
Do note that I am not considering game mechanics here, as they are an inaccurate representation of the lore when it comes to weaponry, shielding and many other aspects of the fiction. Hence why I don’t bring up Brute Power Armour being able to break down completely under enough fire or Tartarus’ shields and the Particle Beam Rifle.