Goofs

When the Colonel is using a rifle scope to survey the area, he is holding the scope extremely close to his eye. A rifle scope requires 3' - 4" of distance from the eye (eye relief to avoid damage to the eye during the recoil of the rifle) to be usable. The scope, as used by the Colonel, would be useless.

After the first shooting, Brenda is describing the type of bullet used as a "dove tail." The proper nomenclature is Boat Tail. A Boat Tail bullet tapers at the rear to provide better ballistics at longer ranges.

While TV (and movie) writers often use this concept, a non-licensee (non-FFL) buyer can't buy a modern firearm online and have it shipped directly to them. Any non-Curio & Relic firearm must be shipped to a Federal Firearms Licensee to then be transferred to an individual.

It is doubtful that a 168 grain .308 rifle bullet wouldn't disintegrate after hitting a regular human being, even through their skull. The sanitation workers should have found bullet fragments beyond the victims.

Sanchez describes the sniper rifle as an "H and S Precision Pro 2000", It is not H and S, it is HS. The full name is, " HS Precision Pro Series 2000 HTR."

There is no possible way to determine the type of rifle from bullet fragments as they did. Writers, who no nothing about the subject about which they are writing, in this case firearms and ballistics, constantly have the police determine precise facts that cannot be determined by the scant evidence found at the scene.

This is copied from the guns com website,

"The HS Precision Pro-Series 2000 Heavy Tactical Rifle is a bolt-action rifle chambered in .308 Win., 7.62 NATO, .300 Win. Mag. and .338 Lapua Mag.. However, since the HTR is a custom built rifle HS Precision says it can be chambered in any standard Sporting Arms and Ammunition Manufacturers Institute (SAAMI) calibers."

In other words, numerous rifles shoot the same ammunition.