Anton Chigurh uses what looks like a shotgun with a silencer, and the wound pattern seems to support this (the guy in the hi-rise, as well as the mexicans at the hotel.)
However, it also seems to be a regular rifle, as the shots he fires at the pick-up driver. So, which is it? Rifle or shotgun?
He could be firing buckshot and slugs both, right? That wouldn’t require the silencer be changed, I don’t think.
He does use the captive bolt pistol on one guy, but most of his kills are with a Remington shotgun. In the book it talks about the silencer in great detail, and how he built it himself.
Been a while since I’ve seen it but I assume Stink Fish Pot is talking about the piece of hardware Chigurh uses (for instance) during his shoot-out with Llewellyn.
Would a slug have the accuracy as portrayed in the movie? Anton hits the driver of that truck right in the neck from about a block away. How realistic is that?
Well he wasn’t aiming at the driver probably.
I don’t have first hand experience with slug rounds, but they are rifled for greater accuracy than an unrifled ball aren’t they?
There you go. (In my experience.)
Ah yes, :smack: you’re both right, Argent Towers and Jophiel.
so, he could use the same equipment to fire buckshot and slugs?
How common is that, and how big are the rounds (slugs)?
Yes. Shotguns have a wide variety of ammunition available to them. Each type of ammo having its own purpose and thus being better suited for certain conditions than others.
Not that large. If you’ve ever held an empty shotgun cartridge, they’re not wider than any normal cartridge. That I know of. I’ve never actually shot or seen a slug cartridge, so it could be radically different.
Someone else can handle this question. 
Here is the wiki for shotgun info. Impersonal method of giving you information, but it should tide you over until someone else with more knowledge can come along. 
Also, I have never ever heard of Dragon’s Breath shotgun ammo until just a few minutes ago. That looks like some bad ass ammo to shoot on a boring ass Sunday like today. Too bad I’m not a high enough roller to afford such ammo. 
Shotguns are extremely versatile due to the wide variety of ammuntion available for them, ranging from very small shot for small game (such as squirrels) to buckshot (several relatively large round projectiles) up to slugs which are frequently carried for defense from grizzly bears. In general, all of these kinds of ammunition can be fired from the same gun.
Slug merely refers to shotgun ammunition that contains a single projectile. Most slugs are the size of the bore of the weapon from which they are to be fired, so a 12 gauge slug is 0.729" in diameter, a 20 gauge slug is 0.615".
Slugs extend the effective range of a shotgun to ~100 yards; accuracy is less than a rifle due to most shotguns being smoothbore. A way to increase accuracy and range is to use a shotgun with a rifled bore and fire saboted slugs; the barrel imparts spin to the slug, increasing accuracy.
I’ve heard that is very rough on the barrel.
A cylinder choke (i.e. unchoked) barrel can fire rifled or unrifled slugs (and in fact you can fire slugs even through a modified choke, although unchoked is recommended). You can also fire sabot slugs (slugs that sit within a plastic jacket) and some hollow slugs in a rifled barrel. The rounds are the diameter of a normal shotgun round, or slightly smaller in the case of sabot slug, and are slightly longer than wide.
The accuracy of slugs, especially in a rifled barrel, can be quite good for limited ranges (out to 50 or 75 meters). After that, the weight of the slug and aerodynamic drag causes the trajectory to drop quickly. This is an advantage when hunting in areas that are flat or without cover, and in fact, in some states (Iowa in particular) rifled shotguns firing slugs are required over rifles to prevent overshoot when a backdrop is not available.
Stranger
For some unknown reason, it occurred to me a day or two ago that fireworks could be fired from a shotgun. I’m glad to see I’m not completely insane.
Sounds like they need to start making shotgun barrels out of stainless steel like this one.
Neither, it’s a silenced Intratec TEC-DC9, a 9mm machine pistol.
CMC fnord!
TEC-DC9 for the Llewellyn fight. But the page shows the silenced shotgun further down.
I’m not a big “gun person” but that’s a pretty nifty site. I could waste a lot of time browsing and reading about guns I know nothing about.
A 12 gauge slug is going to be around 3/4" in diameter. The ones I use on whitetail deer are magnum Rottweil rifled slugs and weigh 39 grams, so you’re talking about an ounce and 3/8 of lead travelling at just about the speed of sound. It’ll punch a hole, that’s for sure. I sight my shotgun in at 60 yards, and would under the right conditions take a 100 yard shot, but that’s the limit of the effective range. You’d have close to a half foot bullet drop at that distance, and lose around 60% of the energy at the muzzle.