Marine Cpl
.577 Tyrannosaur.
I guess in Holdover's GoPerfect's, and 71velle's line of work it's gigantic too. Who am I to say different.In my line of work it kinda is huge. Where I'm usually working with less than 0.0005.
If that gigantic size difference makes a difference to them, then why not a .454 Casull? That extra .001 may make all the difference on a human.