When will this be available to add to character sheets?

When will this be available to copy for homebrew?!? I hate having to just rename basic ammo under “custom” in the character sheet without the rest of the info.

Price?

Wondering the same thing. 

Quote from IamSposta >>

When will this be available to copy for homebrew?!? I hate having to just rename basic ammo under “custom” in the character sheet without the rest of the info.

Quote from ImelinCain >>

When will this be available to add to character sheets?

 It isn't possible to add categories of items to your character sheet (you have to add a specific type of +1 ammunition, such as a +1 crossbow bolt), and the same goes for making homebrew magic items. This also applies to the large number of sword types, so for instance you can make a copy of a scimitar of vengeance (or add one to your character sheet), but not of a generic sword of vengeance.

This is just from my Homebrew setting, but since a normal set of normal arrows costs 1 Gold per 20, so 5 copper per arrow, I said that a +1 arrow would cost like 10 times as much, so 10 +1 arrows in my setting cost 5 gold, since they are one time Use i think thats a fair price, I also dont make them one time use exactly, you can do an investigation check in my game after battle to find up to 50% of the arrows you used. (Note, they are not magical in my setting, only armor piercing)

Quote from SeguiveSiyu >>

Price?

 Xanathar's Guide to Everything has a table of suggested prices based on rarity. The suggested price for an Uncommon magic item is 1d6 x 100 gp. It also specifies that consumable items, such as potions, have their costs halved. I'd consider this a consumable item for that purpose.

I would also probably lower the price further since... it's just ammunition. Maybe have them being sold in bundles of 5 for 250 gp or something.

I wonder if considering the intrinsic value makes sense here. Given a healing potion is 50 gp. Does it make sense to say a single arrow that does only one magical attack before losing its magic is equal to the value of a healing potion? I would say errrr... probably not. so if you accept that, then definitely greater then 1 GP per ammo, but probably less then 50 gp per ammo.

thoughts?

If you wanna take into consideration old 3.5 rules for masterwork quality weapons/ammo... maybe use that as a guide?

MASTERWORK WEAPONS
A masterwork weapon is a finely crafted version of a normal
weapon. Wielding it provides a +1 enhancement bonus on attack
rolls.
You can’t add the masterwork quality to a weapon after it is created;
it must be crafted as a masterwork weapon (see the Craft skill,
page 70). The masterwork quality adds 300 gp to the cost of a normal
weapon (or 6 gp to the cost of a single unit of ammunition, such as
an arrow). For example, a masterwork bastard sword costs 335 gp,
while a set of 10 masterwork arrows costs 70 gp.

Does the to hit/damage of this ammo stack with the to hit/damage of a magic weapon used to launch it?

Do they not have this for firearms? Trying to find +1 Bullets for my pistol but can't

Quote from SeguiveSiyu >>

Price?

how are these still not in the magic item listings for DnD beyond character sheets? 

They are, but they're listed as their respective type - arrows, bolts, bullets, etc. Why would you have just generic "ammunition"? That doesn't make sense.