Velocity question on factory Hornady 73gr ELDM

[AdamRM]

Hello all, first off I would really like to thank everyone that contributes to this forum. I've been primarily a handgun shooter for the last 20 years. Do to a wrist injury I needed to find a new obsession

I've re-equiped my Colt 11.5" SBR to start leaning the basics of scoped shooting.

I don't have a chronograph yet, so I was wondering if anyone might have the velocity of factory Hornady 73gr ELDM out of a 11.5" barrel just so I can figuring what my ballistics will look like at least in general terms until I start working with my own data.

Thank you all again for the new education

Adam

 

[Deere_Man]

25fps per inch is subtracted from the 24” factory test barrel’s listed velocity. So, I’d say 2450-2500fps?

 

[AdamRM]

That's the fps range I also had in my head, was curious if anybody happened to chrono that ammo in their 11.5

I greatly appreciate it

 

[Truck24hr]

20" 7 twist

 

[AdamRM]

Awesome thanks,

That still has me right in my theoretical 2400-2500 range. I might just go ahead and order a chrono, always need more toys haha

 

[AdamRM]

Update for those curious. I was able to borrow a friend's Garmin today. I shot 80 rounds and got a total average of 2356.85fps out of my 11.5 Colt chrome lined barrel.

 

[mxgsfmdpx]

Update for those curious. I was able to borrow a friend's Garmin today. I shot 80 rounds and got a total average of 2356.85fps out of my 11.5 Colt chrome lined barrel.

What twist is that barrel?

 

[AdamRM]

1/7

 

[Smenning]

2615FPS 18” Tikka T3X 8 twist should put you at 2450ish out of a 11.5” all else equal

 

[mxgsfmdpx]

1/7

Thank you.

 

[AdamRM]

With my particular physical issues, getting steady is very difficult, but it's easy to see with a good shooter, it's shooting a tad less than MOA.

With my shaking all over I'm averaging closer to 2MOA

 

[AdamRM]

2615FPS 18” Tikka T3X 8 twist should put you at 2450ish out of a 11.5” all else equal

I was "hoping" for a bit more, but it makes sense it's a little less being a gas gun.

I definitely see a Tikka in my future anyway I set up my SBR mostly to start practicing and work on breathing and trigger control