6.5 147 eldm BC

[Markg90]

So I worked up a load for my creedmoor with 147 eldm and tested them out at range the last two times I went. I used the g7 bc of .335 from the Brian Litz book and noticed it didn’t seem true with my rifle. I’m new to the eldm bullets always shot Berger’s before and their advertised bc has always been spot on for me. Chronographed with LabRadar same day I was about half moa low to what my ballistic app said at 250,280,300,400,500,600,667, and 820 yards and around 1 moa low at 900 and 1000 yards. Tinkered around with the bc on the app leaving everything else the same until the drops matched my real world drops and came up with .310 for the bc. Is it possible for bc’s to be different in different barrels or atmospheric conditions or do I have something else going on?

 

[918v]

Are you sure they are 147’s?

 

[Markg90]

Are you sure they are 147’s?

Are you sure they are 147’s?

Yea I weighed the first couple after I opened the box

 

[918v]

Maybe your sight height is wrong

 

[Markg90]

Maybe your sight height is wrong

No I’ve checked that. I’m pretty ocd about that kind of stuff

 

[6.5SH]

So I worked up a load for my creedmoor with 147 eldm and tested them out at range the last two times I went. I used the g7 bc of .335 from the Brian Litz book and noticed it didn’t seem true with my rifle. I’m new to the eldm bullets always shot Berger’s before and their advertised bc has always been spot on for me. Chronographed with LabRadar same day I was about half moa low to what my ballistic app said at 250,280,300,400,500,600,667, and 820 yards and around 1 moa low at 900 and 1000 yards. Tinkered around with the bc on the app leaving everything else the same until the drops matched my real world drops and came up with .310 for the bc. Is it possible for bc’s to be different in different barrels or atmospheric conditions or do I have something else going on?

A recent conversation on the same bullet you may find of interest:

Garmin Tactix and AB Synapse Bullet Issue

Ok, I’m setting up my rifles using AB synapse to send rifle and bullet information over to my Garmin tactix delta. When I select a Hornady 147 grain ELDM, The information in the bullet table doesn’t match the information available in Hornady‘s website. For example, the G1 BC shows up as .633...

www.snipershide.com

ETA:
Since he was concerned about G1 didn't mention G7, AB mobile shows .315 G7 for 147 ELD-M so in the ballpark of your .310

 

[2aBaC̶a̶]

so what are the details? what app, velocity, rifle specs?

 

[Markg90]

A recent conversation on the same bullet you may find of interest:

Garmin Tactix and AB Synapse Bullet Issue

Ok, I’m setting up my rifles using AB synapse to send rifle and bullet information over to my Garmin tactix delta. When I select a Hornady 147 grain ELDM, The information in the bullet table doesn’t match the information available in Hornady‘s website. For example, the G1 BC shows up as .633...

www.snipershide.com

ETA:
Since he was concerned about G1 didn't mention G7, AB mobile shows .315 G7 for 147 ELD-M so in the ballpark of your .310

I wonder why the applied ballistic book had .335 listed

 

[Markg90]

so what are the details? what app, velocity, rifle specs?

The app is ballistic ae and the rifle is a Bergara premier lrp in 6.5 gaymoor. Nx8 scope

 

[Markg90]

so what are the details? what app, velocity, rifle specs?

 

[Gohring65]

Now that you actually trued your data.
Enjoy…