Reloading 7PRC

cast10K

FNG
Joined
Aug 28, 2018
Messages
31
No pressure with the below powders. First time doing the painless load dev method. Notice a hiccup with 65.5 of H1000, not sure what happened there obviously I need to be more attentive at the table.

For those curious:
22” proof suppressed with 180 rounds on barrel.
180 ELD
ADG brass second firing
Fed215

29df2302f3ed0e37efa9ce711bfd9242.jpg



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This squares with what I'm getting with 68.0g H1000, 180 hybrid, ADG, Win LRM, 3.375" OAL, 21" barrel + Dominus, 2847fps at 110 rounds.
 

DEW0341

WKR
Joined
Mar 19, 2016
Messages
462
Location
camp pendleton, ca
This squares with what I'm getting with 68.0g H1000, 180 hybrid, ADG, Win LRM, 3.375" OAL, 21" barrel + Dominus, 2847fps at 110 rounds.

The numbers circled in the pic are book max charge. I ended up seeing pressure 2 grains over max with H1000 and 4831sc. Pressure with staball HD .5 over hodgdon website max going 2900Fps


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cast10K

FNG
Joined
Aug 28, 2018
Messages
31
The numbers circled in the pic are book max charge. I ended up seeing pressure 2 grains over max with H1000 and 4831sc. Pressure with staball HD .5 over hodgdon website max going 2900Fps


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I wasn't able to find published data for that powder and bullet combo. Where did you find that?
 

Jhoman

FNG
Joined
Jun 29, 2024
Messages
11
I'm working on loads for my Bergara Premier HMR Pro in 7PRC, 24" barrel.

Hornady 180gr ELDM.
Peterson Brass
CCI 250
64gr H4831SC
COAL 3.350
2860 FPS
.494 group @ 100 yds

My next load that I have not shot.

Berger 184gr hybrid target
Peterson brass
CCI 250
68.7gr VV 565
COAL 3.407
 
Joined
Feb 10, 2024
Messages
99
For those of you using bushings to size your brass in 7mm PRC Hornady dies, what size (s) do you find work the best?
 

cast10K

FNG
Joined
Aug 28, 2018
Messages
31
It’s in the Hornady manual for 180 ELDm
d01274d256530bb31d241c11b8f080be.png



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It’s in the Hornady manual for 180 ELDm
d01274d256530bb31d241c11b8f080be.png



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I used that same data to extrapolate for the bergers, but not all 180's are created equal. The ELDM has a lot more bearing surface generates higher pressure with equal charges. There is data for some other cartridges with both bullets and the Berger routinely has a higher max charge.
 

Jhoman

FNG
Joined
Jun 29, 2024
Messages
11
Using Peterson brass & Berger 184 Hyb Targets, 310 bushing with loaded necks @ .3125, Redding dies
 

686

FNG
Joined
Nov 15, 2020
Messages
68
Ruger American Go Wild 24”

Reloaded Hornady brass

175 ELDX 68.4gr RL25 (book max)
2855
2884
2889
2852
2881
2899
2896
2860

Average = 2877 fps (less than book velocity, which is 3000 for this recipe)

I don’t know if this barrel is just slow or what, but the accuracy is consistently just sub-MOA. This was at 200 yards:

6906b6f73d961fcda40498a8a8552111.jpg
 

Jhoman

FNG
Joined
Jun 29, 2024
Messages
11
184gr Berger Hybrid Target
68.7gr VV N565
CCI 250
Peterson Brass
Neck Bushing 311
.015 off the lands
18 shot string
2970 FPS Avg
STD 10.5
 
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