Bomar97 - selling on the forum, or offering for sale is ok in the buy/sell/trade folder, where you must be a paying IAA subscription member to post. For the various state laws on ammo:
Hollow point pistol rds are only illegal in NJ when carried loaded in terms of pistol calibers. They are not illegal to own, but are harder to find.
Pistol caliber AP cartridges are illegal to possess in CA, TX, IL, NJ, KY, and Wash D.C. (in KY this does not apply to cartridges owned prior to July 15th, 1994). IN RI pistol AP loads are illegal to own only if they are truncated profile.
Teflon-coated pistol rds (KTW) are illegal to possess in the aforementioned states, as well as IN, HI, AL, KS, NC, SC, and OK.
.50BMG in AP, API, APIT, SLAP, and Incendiary are illegal to own in CT (.50BMG ball ammo is legal though).
Exploding bullets, 12ga flame shells, 12ga bolo, and 12ga flechette loads are illegal to possess in IL and IA
Exploding bullets, pistol caliber AP, 12ga flame shells, 12ga bolo, and 12ga flechette loads are illegal to offer for sale, sell, or deliver in FL
In Louisiana, owning pistol caliber AP requires a permit from the police, and in Maine it must be a part of a “bona-fide collection”, although the Mine law offers no definition for “collection”.
Exploding bullets are banned in TN
All that being said… these laws are not enforced or even known of 99.99999% of the time. The laws are mostly in place to allow for enhanced prosecution of criminals who are apprehended for crimes, and who have such ammunition in their possession at the time. In CA, they do have fairly strict adherence to their laws, but I have lost count of the number of times I have seen sellers / buyers on Gunbroker with all types of offending ammo in various states where restricted. It doesn’t really get any easier than monitoring Gunbroker since the state the seller is in is shown, and if police are ignoring this, then they are not trying at all. Still, one should be careful as these laws are state felony offenses in most cases.