I've really been getting into the symphonic black metal sound lately and I'm looking to find more like Ceremonial Castings and Emperor.

As far as Ceremonial Castings goes, I love Salem 1692, it was the first album by them that I listened to and I thought it was an amazing piece of SBM, I've now heard Midnight Deathcult Phenomena, Barbaric is the Beast and Immortal Black Art by them and enjoyed each one just as much as Salem 1692. Specific songs I enjoy, although I like every album in it's entirety: The Devil in Salem, The Crucible and the Cross, Onward to Gallows Hill, Immortal Black Art, Propogating the Witch, I; A Thousand Fires, Creatures of Another Light, Midnight Deathcult Phenomena.

As for Emperor, I've only truly listened to In the Nightside Eclipse and Anthems to the Welkin at Dusk, both of which, again, I enjoyed from the opening track to the last, but my favourites are: Alsvartr (The Oath)/Ye Entrancemperium, Ensorcelled by Khaos, The Loss and Curse of Reverence, With Strength I Burn, Cosmic Keys to My Creations and Times, The Majesty of the Nightsky, I Am the Black Wizards.

So anything that sounds like Ceremonial Castings and Emperor all around would be great, those songs stick out at me as my favourites, but again I like each album from start to finish, thanks in advance.

At the risk of listing music that is too well-known, I'd say check out Nokturnal Mortum - To the Gates of Blasphemous Fire. NeChrist and Lunar Poetry are also worthwhile albums.

You definitely need some Limbonic Art. In Abhorrence Dementia and Moon in the Scorpio are two albums you must have.

Obtained Enslavement - Witchcraft relies a bit less on chaos, and tends to be more on the melodic side of symphonic bm, but it's worth checking out anyway.

Check out Reign of Erebus's Humanracist. Nihilistic, raw symphonic black metal. I think you'll dig 'em.

Hellveto, it's less intense than Emperor, but it's pretty good stuff. I will second Nokturnal Mortum. Also try the Khors albums Cold & Mysticism.

I might be sound like a broken record at this point, but you should check out Mirrorthrone, the Carriers of Dust album in specific.

You need to listen to Obtained Enslavement as soon as possible.

I second Limbonic Art. They are very good.