Status jewels and bowguns

I'm kinda new and I've only gotten to HR 6, but I've got some jewels that increase dragon and water attack power and blast jewels. I main the bowguns and my question is if I apply a jewel to a bowgun that doesn't have that element what will happen? If I apply the blast jewel does that mean my normal, pierce, and spread ammo will apply stacks of blastblight? Any information would be helpful