Did the shooters know their K/D before their suicide?

Do you think mass shooters knew how many they had killed before committing suicide? 
I mean doing the shooting I doubt they had the time to keep count also because we often hear about victims who played dead, so they must have fooled the shooter´s. 

- Even if they didn´t make a count they must have had some kind of idea or maybe they think they killed a lot more than expected. 
I watch gore forums and have seen many crime scene photos of mass shootings and when there is blood all over the place and the bodies 
lay all over the floor it can actually seem like there are double the amount of casualties or even more than that. So anyways what are your thought on this?

I think it safe to say they likely thought their kill count was higher then what it actually ended up being.

Yeah I think that too, because in all the carnage and confusion with people screaming, blood everywhere and usually a lot of injured people it might seem like they killed A LOT more. Many shooters usually shoot and injure 10-20+ people who are able to escape and survive with gunshot wounds so the shooter might have thought that he had killed a lot more people.

I remember seeing a video on columbine where the narrator says Eric and Dylan thought they killed at least 23 people (or lower or higher i dont exactly remember). I think it was called "Why they only killed 13"

Matti Saari knew he killed 10 people, because he said it in a phone call he made to a friend after the shooting. Tim Kretschmer also mentioned he killed 13 people at his school when he took a driver hostage, although I'm not sure if he was counting the gardener of a psychiatric hospital he killed or if he was just trying to intimidate the driver.

SavageGlocker wrote:

Matti Saari knew he killed 10 people, because he said it in a phone call he made to a friend after the shooting. Tim Kretschmer also mentioned he killed 13 people at his school when he took a driver hostage, although I'm not sure if he was counting the gardener of a psychiatric hospital he killed or if he was just trying to intimidate the driver.

Could just be lucky guesses on both counts.

Michael Ryan probably thought he killed more people than he did. Richard Durn said in the police integration that he didn't know how many people he killed (I wonder if they told him?).

Also know I remember that Dylann Roof actually thought that he killed less. As he says in this video "There wasn´t even 9 people there" 
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SavageGlocker wrote:

Tim Kretschmer also mentioned he killed 13 people at his school when he took a driver hostage, although I'm not sure if he was counting the gardener of a psychiatric hospital he killed or if he was just trying to intimidate the driver.

No. He thought he killed 15 people after he retreated from the school. Hostage driver said in the interview that Kretschmer told him that he killed 15 people in school.

For the Shooters that become an hero, it seems sad that they never know there score. Martin Bryant laughed when he was told his high score.

Michael Ryan asked the cops for his score before he became an hero.

Ziamber II wrote:

For the Shooters that become an hero, it seems sad that they never know there score. Martin Bryant laughed when he was told his high score.

Lol did he think he had killed less?

He knew he killed his mother and dog, but wanted to know his score, he still had the England highscore.

Ziamber II wrote:

He knew he killed his mother and dog, but wanted to know his score, he still had the England highscore.

That didn´t really answer my question, you already said he wanted to know his score but did he think he killed less and therefor laughed because he got the high kill count?

Adam Lanza's guess would have probably been spot on since he killed everyone, apart from two, that he shot.

Some mass shooters might have known.

I doubt that mass shooters like Stephen Paddock knew how many they murdered since a lot of people were shot, but most were only injured.

In other words, if a mass shooting has a high number of casualties, the shooter most likely won't know the exact number of the deceased, but more likely only an estimate. It depends on the circumstances.

Another theory is that they might not even have an idea.

Remember that people played dead during some mass shootings as you have mentioned.

I think that VT Cho might have had a good guess at the amount of people he killed.

I can imagine due to the adrenaline (and other substances) coursing through any given shooter's system, and how little time most shootings actually take, they'd barely even register the number. Furthermore, it would be pretty easy to mistake someone who's been hit and fallen down for someone who's dead. This might lead to an inflated mental figure, as people who are prone and wounded are counted as being dead by the shooter. Of course, some shooters seem to be able to maintain their cool and double tap their victims, but they seem to be a minority. Ultimately, unless you're absolutely certain of how many people are in the area - like Randy Stair was - you're liable to get the figure wrong.

I bet Elliot Rodger thought he killed more than he did.

Many some do not even care. Maybe the just want to injure and kill as many as possible and do not care about numbers as long as they are high. Just my two cents.