Reloading 7PRC

[Gadjet]

Did some test firing yesterday.
ADG new brass
Fed215
69g H1000
175 ELDX

Man... These bullets like to jump. Factory hornady 180eldm jumps .120 before hitting the lands on my rifle.

5 rounds at the following .120, .095, and .070 jump. Yes I know you're not supposed to care about jump but its a good starting point for setting up your dies and adjusting them when throats start to erode

.07 was like 2" group,
.095 was 1.25" group
.120 was sub 1" but my 3rd round was shot shortly after my first 2 'cold bore" shots. 3 shot drifted out and the last ones came back

Gonna load up 15 more rounds
.125, .120, .115 to see which ones are happiest

Speed is somewhere 2930 fps based on some velocity ladder readings i took with 180 bergers, but I wanted to hone in the seating depth before I took velocity readings

What length barrel?

 

[doc holiday13]

What length barrel?

22"

 

[5811]

I got 2800 with 69.9 of ramshot grand with a 20" barrel, berger 180s and new adg brass. I did no other work up, just grabbed the hodgdon max charge and loaded up 10 .020 off the lands.

I was getting 2825 out of factory Hornady 175 (early hot loads - r26) and Federal 175 eldx (also r26?).

These are the 10 loaded.



My next try is 10 more seated 0.070. I'm working under the assumption that berger vld-h like very little or a lot of jump.