Hey @MelonHead! Where you at?!
Cutting a bullet, as well as an iron ball from a musket, is indeed possible - of course, having the speed to react to it is a different story, but that's not what you wanted to hear, right?
Anyway, muskets don't have the caliber to break a steel sword. Also, due to it's own velocity, the moment it comes in contact with the blade it effectively cuts itself - the blade just helps with that. As for the two pieces, because of the impact, the direction they split will go in a wide angle - where they land is unsure, but it's definitely going to be far from the one holding the sword.
I hope you don't mind my commenting, you did ask :)
I feel like he would have a significantly better chance of parrying the musket ball away with the flat of the blade, it's mostly just the cutting in two that wouldn't really help you in this situation.
Uh, that will definitely break the sword, so you know.
I was actually just watching some youtube videos in which it was shown that swords can theoretically cut bullets in two mid flight, though the path of the fragments seemed rather erratic, sometimes deflecting outward at an angle and other times simple travelling on a similar path as two pieces.
Whether the bullet was deflected or cut, however, seems rather moot to me, as the true impossibility lies in turning one's body around in mid air in the time it takes a musket ball to travel six feet.
Data varies on how fast a musket ball from a flintlock pistol will travel, but I found data ranging from a muzzle velocity of 700 fps to as high as 1500 fps depending on the composition of the black powder and the particularities of the gun used. Even using the lowest number of 700 fps, the time that it would take the musket ball to reach Guardian at a range of six feet is approximately 0.00857 seconds, or less than one hundredth of a second.
Even if Guardian were somehow able to turn himself around in the air without having used the proper leverage when leaving the ground, it seems impossible to do so in such a tiny fraction of a second, no matter how agile he is or how good his reflexes are. Even more difficult would be locating, tracking, and deflecting the flying musket ball after doing so, all within less than 1/100 of a second. Not trying to be a jerk to anyone here, but this act seems physically impossible to me, even had Guardian possessed superhuman speed to go with his agility and reflexes.
I grow tired of this physics debate. Let's just conveniently overlook logic this one time and get on with the fight.
I overlook logic all the time. That's how Melon's character was dropped kicked in the back by a giant chicken and head butted the ass of another character, who head butted a tree and died from a broken neck.