First is anyone finding the abyssal scrolls and if you are how and where are you finding them?

Second is that the only way to get the 250 chest in the infernal area because I am not getting anywhere close to the amount needed for the big chest.

I've seen a few from the material chest at the end of the run. It's not enough

You might be able to get 250 at tier 7-8, but tier 6 was like 150ish or something from what I saw. This whole infernal horde activity is dog shit in its current state, personally I'd wait until they buff the rewards/density or something to run it