Referencing Tunes' Round 0 verse where he bit Tupac’s style.
One of the last songs Pac made was called “Against All Odds”, and in it, he dissed pretty much everyone, including Nas, for biting his style.
I’m gonna start calling tunes .357 because I’m against him.
Also, all of these numbers are odd.
Finally, a reference to gun control. A .357 magnum is a type of gun.