Full text of bill here:
https://www.govtrack.us/congress/bills/118/s3223/text
Excerpt:
Restriction on bulk ammunition sales:
In general, it shall be unlawful for any person licensed under this chapter to transfer to a person not so licensed, during any 5-day period:
– More than 100 rounds of .50 caliber ammunition OR
– More than 1,000 rounds of any other caliber of ammunition
It also comes with all kinds of stipulations, including background checks and FFL record retention of all ammo sales for a minimum of two years.
h/t Scios