when it comes to 9mm ammo. What does the different grain amount mean?

weight of the projectile 

Weight of the projectile. 

most common are 115 and 124 grain 115 is just a little bullet then the 124.

Weight of the projectile. 

Weight of the projectile 

12 hours ago, FishNHard said:

most common are 115 and 124 grain 115 is just a little bullet then the 124.

The weight of the projectile.

You forgot 147.

And 90, 150 and 158, etc.

https://www.underwoodammo.com/products/9mm-luger-90-grain-xtreme-defender

https://www.targetsportsusa.com/federal-syntech-9mm-luger-ammo-150-grain-tsj-ae9sjap1-p-83051.aspx

https://www.laxammo.com/fiocchi-9-mm-subsonic-158-gr-fmj-9ape-detail

 

There are 7000 grains to a pound.  Just to put it in more familiar terms.   

In general a lighter bullet will have more muzzle velocity

Let's not stop saying "the weight of the projectile" 

 

The weight of the projectile

The weight of the projectile

The weight of the projectile

The weight of the projectile

This is what happens to people when they are stuck in the house too long!

The projectile of the wait. 
 

 

shit. 

Hopefully the new guy has a sense of humor..

https://en.m.wikipedia.org/wiki/Grain_(unit)

14 minutes ago, Zeke said:

Hopefully the new guy has a sense of humor..

I'd hope his humor is better than his Google skills.

13 minutes ago, JackDaWack said:

I'd hope his humor is better than his Google skills.

Hey... let’s not be a douche to new people 

39 minutes ago, Zeke said:

Hey... let’s not be a douche to new people 

Sorry. I should have been more clear...

Its the weight of the projectile. 

1 hour ago, Zeke said:

Hopefully the new guy has a sense of humor..

I do!

15 minutes ago, Rickap7 said:

I do!

That’s good! You need it with these miscreants! I’m literally the only normal person here. True story!

19 hours ago, Rickap7 said:

when it comes to 9mm ammo. What does the different grain amount mean?

Cost, basically.   115 grain ammo is usually the cheapest.  Then 124 grain stuff.  Followed by 147 grain stuff.  Why?  More weight means more metal which means more money. 

37 minutes ago, Zeke said:

That’s good! You need it with these miscreants! I’m literally the only normal person here. True story!

No assessment of “Normal” includes pig soup. 

Hold on.... Are you guys saying it’s the weight of the projectile?

17 minutes ago, Tony13 said:

Hold on.... Are you guys saying it’s the weight of the projectile?

No, we are saying it’s the projectile weight. 

44 minutes ago, Displaced Texan said:

No, we are saying it’s the projectile weight. 

Which has a direct effect on the projectile wait.

1 hour ago, voyager9 said:

No assessment of “Normal” includes pig soup. 

When did moms basement become the new” normal “ mr hot pocket 

1 hour ago, Tony13 said:

Hold on.... Are you guys saying it’s the weight of the projectile?

No. It’s the projectile’s mass as acted on by this planetary body’s gravity. 

f=ma