Sir R3AL

I'm trying to create a mod that adds war hammers into the game. But there is one, I want them to be able to knock back enemies farther than usual. Now I know there is an enchantment that does that but I want it to have more knock back upon creation of the weapon, without enchanting. Help?

I'm am currently trying to create a mod that puts War Hammers into the game. I can easily add the item into the game but at the same time, I would like to make it have more knock back than the original sword (Its a War Hammer, they can hit hard). I can't currently figure out how to add this enchantment to this weapons. Help?