Hi Guys,
I need help trying to find a load for Hornady 178Gr ELD-M bullets.
I can't these things to shoot at all.
Rifle:
Big Horn Origin Action
Criterion 24" heavy barrel
KRG Bravo Chassis
Using a Magnetospeed (Yes, Labradar is on its way even though the Magnetospeed has worked fine)
What I have tried: (5 shots groups)
All rounds were COAL of 2.805 (Mag fed) using LC 1x fired brass with CCI LRP
IMR4064: 42.0 - AVG: 2696 - Grp: 2.25" SD: 37, ES 53
IMR4064: 42.3 - AVG: 2685 - Grp: 1.75" (Slower??) SD: 7, ES 17
Shooters World Precision: 41.8 - AVG: 2608 - Grp: 1.937", SD: 9, ES 21
Shooters World Precision: 42.0 - AVG: 2632 - Grp: 2.0", SD: 21, ES 45
Shooters World Precision: 42.2 - AVG: 2638 - Grp: 1.0", SD: 17, ES 47
Shooters World Precision: 42.4 - AVG: 2662 - Grp: 1.25", SD: 7, ES 18
Varget: 41.8 - AVG: 2670 - Grp: 1.5", SD: 29, ES 72
Varget: 42.0 - AVG: 2660 - Grp: 1.75", SD: 17, ES 46
Varget: 42.2 - AVG: 2676 - Grp: 2.0", SD: 13, ES 35
Varget: 42.4 - AVG: 2693 - Grp: 1.75", SD: 14, ES 33

All rounds seem to have the SD and ES all over the place.

Just as an FYI. After all the rounds (50 Total), not being happy, I decided to take a few shots with my other known good round.
175SMK with 44.1 gr of Shooters World Precision @2.80"
5 shot average of 2758fps with SD 7 and ES 17 group of 0.7". Previous week was probably a 0.4" group but I did not out there checking. Just shooting for fun. I was out there trying to find a load for my Creedmoor. Actually using 147 ELD-M. Much better in that rifle. Groups of 0.4".
Anyway, I then took 3 shots at a 300 yard gong. all 3 in the center with an average of 2750fps SD 3, ES 7.

The rifle can shoot. Just for some reason it seems the rifle does not like the 178 ELD-M. Will be trying Bergers next or probably just stick with the 175 SMKs.

Any help will be greatly appreciated!!!

I am using Magpul mags and I just measured. I can get a 2.84 COAL in the mag. Will try that on my next trip.
Will try and stick with the Shooters World as it gives me better velocity and work very well with other loads and I have plenty of it.
Hornady list 40.6 as a max for the 178 using Varget.

Can you find a load that will get you to 2760 fps or so? Both loads you referenced as accurate are up in the 1750 fps range, while all your 178 ELD-M velocities are nearly 100 fps slower. Its been my anecdotal experience that rifles tend to be accurate at similar velocities for different bullets of a similar weight class.

All the load were above 2650. Even up to 2770. They just won,t group under 1.5” no matter what I do.
No big deal. Got rid of all the ELDs and will try some Nosler ABLRs for fun.