Okay but where does that training that Tamaki has done go? Couldn't she use her released newly found fire abilities melt the Iron? It seems that her training didn't pay for at least this fight. I thought she would be used less for comic relief since she discovered she was holding her powers.
@Undftddj here they are using iron bullets, instead of the commom lead bullets of real life. Iron has a melting point of 1538ºC.
In fact, we know they are not using lead bullets, because lead is not magnetic.
And to aswer my own question, ``wouldnt be better to just heat the bullets to 750ºC then shoot it?``
No, bc the gunpowder ignite around 430ºC, making this tactic inviable