123/H4350 Load Development

[JFComfort]

Load development with H4350 and 123 Lapua Scenar with my 26" match rifle. I didn't run them through a chronograph but reverse engineering dope at 715 yards. I'm estimating 2950-3000 fps with 45 grains. No pressure signs so I want to explore beyond 45 grains then dial in the the COL to get them shooting bug holes. 4.1 mils to 715 yards. I am loving the US Optics ER-25! The MIL MPR reticle is excellent, I want to get out and practice some range estimation with it soon.

The lower left group was my sight in using the team 139 load.

 

[Paulyr450]

Thats a sweet setup and good shooting especially when you havent dialed it in yet. I have always shot the 139 lapuas and 142 smks through my 700 or savage. I just bought a bunch of 123 sierras and lapuas to try for the 3000 fps range. Good luck

 

[JFComfort]

Thank you! Keep us updated on how your load development goes!

 

[Niles Coyote]

Looking good, 260 I assume?

 

[thespecialist]

With that 26" barrel, 3K+ shouldn't be an issue (assuming that's a 260). I'm getting 2900+ from 44.5gr of H4350 pushing 123 Amax's from my 20" 260 and it's ridiculously consistent.


Nice stick by the way!

 

[JFComfort]

I apologize, I should have mentioned its a 6.5 Creedmoor.

 

[MarinePMI]

Any comments/opinions on how these compare to the Nosler BT 123's?

 

[Jedi]

3023fps

20" barrel 6.5x47 123skinnie

Got another barrel being Melonited which should be even faster hoping for 3100fps

 

[JFComfort]

45 grains H4350

45.5 gains H4350

46 grains H4350

I will play with the COL to see if I can dial in 45.5 grains. This load should be going 3,000 fps + I will run them through a chronograph when I get the chance to confirm velocity.

 

[BoilerUP]

With that 26" barrel, 3K+ shouldn't be an issue (assuming that's a 260). I'm getting 2900+ from 44.5gr of H4350 pushing 123 Amax's from my 20" 260 and it's ridiculously consistent.

Stuff like this makes me want a shorter barrel on my 260 even more...

 

[thespecialist]

Stuff like this makes me want a shorter barrel on my 260 even more...

I was mistaken on my numbers there. 44.5 is giving me 2872fps average in Rem 7-08 brass, 2.805" COL. 45gr of H4350 is where it gets above 2900fps, but the accuracy is better from 44.2-44.7gr. One of these days I'm going to see what I can squeeze from some 130gr Bergers.