User blog comment:Lightbuster30/Catching a Crossbow Bolt/@comment-28876888-20190430230644

Generally speaking you'd be looking at the default calc of this:

Distance Moved by Character * Speed of Projectile / Distance Moved of Projectile = Speed of Character

For example, let's say I move one meter with my arm to catch lightning thrown at me. Lightning has an established speed of 440,000 m/s and had to cover twenty meters.

1 * 440000 / 20 = 22000 m/s, or Mach 64.14.

In this case you took a rather long route to do much of the same. I'll follow your assumption of distance moved to give you a more relevant example of the above.

1.436 * 140.208 / 0.3048 = 660.56 m/s, Mach 1.93.