While I was reading the book, I had a definite idea with reloading magic ammunition (Given that this ammunition is one). It’s not like from view of optimization, more like gamemechanic opportunity. I considered this from the point of the Pact of the Blade, but at the same time I was searching answers for Weapon Bond.
I know in advance that PotB allows you to use any magic weapon as a pact weapon, including ranged.
However, later on I came across Jeremy Crawford’s answer about using arrows with Weapon Bond. I wondered where I was wrong when I read the book, and I noticed one thing that caused misunderstand.
I considered only magic ammo. In Xanathar’s Guide and Dungeon Masters Guide when writing the type of magic item for ammunition, sourcebook directly write the type "Weapon (Arrow)". Perhaps:
Arrow of Slaying
Weapon (arrow), very rare
An arrow of slaying is a magic weapon meant to slay a particular kind of creature. Some are more focused than others; for example, there are both arrows of dragon slaying and arrows of blue dragon slaying. If a creature belonging to the type, race, or group associated with an arrow of slaying takes damage from the arrow, the creature must make a DC 17 Constitution saving throw, taking an extra 6d10 piercing damage on a failed save, or half as much extra damage on a successful one.
Once an arrow of slaying deals its extra damage to a creature, it becomes a nonmagical arrow.
Other types of magic ammunition of this kind exist, such as bolts of slaying meant for a crossbow, though arrows are most common.
Whereas common ammunition in PHB is classified as a just item (hence non-weapon) in the Adventure Gear list.
Is it right to make conclusion that in this case it can be considered as extension of Jeremy Crawford’s post, and Magic ammunition is legal for PotB and WB like pact/bond-weapon, but Non-magic ammunition is not legal for PotB and WB like pact/bond-weapon in RAW?