Coz you managed to get quite far ahead before we started to follow you.

Trivia

The hunting rifle is based on the Mini-14 with an attached scope. However, the in-game performance of the weapon more closely resembles that of the M14, which fires a significantly more powerful round.

The words "Patriot 809" are on the receiver, suggesting this is its model name in the Left 4 Dead universe.

Despite the achievement "Cr0wnd" suggesting so, you cannot kill the Witch with a single headshot using the hunting rifle. It is possible to cr0wn a Witch with the Hunting Rifle, though, because you can stun her and finish her off before being startled.

The Mini-14 is an unusual choice for a one-hit-kill marksman rifle. It is less accurate than the M16 and fires the same cartridge, 5.56x45mm (or .223 Remington, a cartridge mainly used by civilians which has the same dimensions), which is generally effective at intermediate ranges (less than 400 meters compared to 800-1000 meters from a larger caliber hunting rifle). It is known amongst civilian and military shooters that the 5.56mm round is a marginal man stopper and hardly a one-hit-kill weapon.

It is also possible that the Mini-14 featured in Left 4 Dead could chamber the 6.8mm Remington SPC round, which wound explain the notably greater stopping power/accuracy compared to the M16.

The hunting rifle is the only gun that can shoot through almost anything.

In Left 4 Dead 2 the Hunting Rifle is now a Tier 1 weapon instead of a Tier 2 weapon because of the Sniper Rifle taking it's place. However, it rarely spawns with other Tier 1 weapons (only known location being the starting/ending point of Hard Rain), instead spawning with Tier 2 weapons, and has higher priority to the Survivor bots than submachine guns and pump-action shotguns, as if it were a Tier 2 weapon. It may be treated as a Tier 2 weapon because of leftover coding, but can still be considered Tier 1 because of the Sniper Rifle's superiority in nearly every aspect.

It is also is the only gun that has the same animations as it did in Left 4 Dead.

Its scope is mounted backwards.

In Left 4 Dead, it is the only weapon not to have a Tier 1 predecessor, while the others do.

Even though it was featured as the only scoped rifle in Left 4 Dead, semi-automatic rifles are illegal to use for Hunting in Pennsylvania.

Zoey's AI almost always take the rifle if available.
It takes 12-15 shots to kill a witch with a hunting rifle in all difficulties except Easy. (In Easy the Witch's health is only 500 compared to 1000)

The auto shotgun makes the same sound as the Spy's pistol in Team Fortress 2.