EDIT: So after trying this, no you can't just Gjallarhorn him with 42 shots. Based on the Skolas change, his health was lowered to 150,000. Without burn damage, Gjallarhorns do 2141 impact damage. Primary Wolfpacks do 199, secondary does 100 (tested this during Void week burn). Total per rocket if they connect, 4400+ damage. Let's just round down to 4,000 to take a worst case scenario of misses. 150,000/4,000 damage is 37.5 rockets. So with the lowered health, does this math seem like Skolas is still pretty easy to defeat by just using Gjallarhorns? So even without the burns, as expected, Gjallarhorns will still kill the baddest boss in the game. Have to try tonight to see if that math is correct.