If the claim is made by the defendant that they were justified in shooting the attacker, the only factors a jury is allowed to consider are factors related to justification. The prosecutor is not even permitted to introduce evidence that your ammo was hand loaded, since that doesn't relate to whether the shooting was justified.
I agree, I think the only time a "load" would come into question is if you shot the perp, bullet went through him, through the sheetrock, shattering the 2x4 stud, busted through the outside brick, traveled 50', went through the privacy fence, across the street, through a cars window and ended up lodged into the Twinkie that a 4 yr old in the back seat was getting ready to take a bite out of.
