So on using the weapon ward to block all bullets no it got errated to one specific type of weapon
Ink Monkey Bones #9: Unofficial Infernal Relics Errata
So no anti-bullets weapon ward, but something like a pistol, sniper rifle, tank cannon, machine gun, knightmare rifle weapon ward.
Weapon Ward: This categorization of weapon types is metaphysical rather than physical, and the metaphysical is in large part defined by language. (Blame Elloge.) As such, if a weapon might reasonably be associated with the name of the weapon type repelled by the ward, then the ward functions against that weapon. So a sword ward will block both a short sword and a great sword with equal ease, a javelin—being a small throwing spear—is subject to a spear ward, and a khatar—also known as a 'punch dagger'—is susceptible to the power of a dagger ward. When in doubt as to whether a weapon ward will function against a given weapon, assume that the ward will function against that weapon.
A weapon ward must be defined to function against a specific type of weapon. Axe wards, chain wards, seven-section staff wards and whip wards are all viable options. Edged weapon wards, projectile wards and harmful-object wards are not legitimate weapon ward types.
For purposes of a weapon ward, it is the weapon's type that matters, not how it is used. For example, a sword ward will protect equally against blows delivered with a daiklave's edge, flat or pommel.
Ink Monkey Bones #9: Unofficial Infernal Relics Errata
So no anti-bullets weapon ward, but something like a pistol, sniper rifle, tank cannon, machine gun, knightmare rifle weapon ward.