"I'm only a backblock shearer, as easily can be seen... I've shorn in most of the famous sheds, I've seen big tallies done, But somehow or other, I don't know why, I never became a gun." The shearer describes his many attempts to make the century
A "gun" was a high-speed shearer who could shear "the century" (100 sheep) in an eight hour day. - RBW