7PRC load data starting point

[Klransom]

I just got a Seekins Havak Element in 7PRC and need some starting points for loads to try. I have 168 vld hunters, 175 elite hunters, and 162 eldms for bullets options. I have Staball HD and N565 for powder. Has anyone had good luck with any of those bullet powder combos?

 

[TxLite]

This is directly from Berger for the 175 EH and 168 vld.

 

[Klransom]

Cool thanks, I also have a little N570 and H4831sc that are on those charts I can try.

 

[LFC911]

I would start with the N570, I haven't tried it (i use RL26) but everything else I read looks like that would be the next best choice.

 

[Bobbysdoinwork]

Im working up the 168s right now in a ruger american predator peterson brass winchester magnum primers i will post my results after this weekend still on my load ladder

 

[Klransom]

I ended up finding the magic load it was N570 with the 180gr ELDM it ended up killing a deer, elk and moose this fall.

 

[Gadjet]

I ended up finding the magic load it was N570 with the 180gr ELDM it ended up killing a deer, elk and moose this fall.

Define "magic". What kind of groups and velocities are you getting?

 

[TxLite]

I ended up finding the magic load it was N570 with the 180gr ELDM it ended up killing a deer, elk and moose this fall.

Great job. We need some terminal performance pics and load details

 

[Klransom]

73.0gr of N570
About 12 thousandths off the lands.
2984 FPS out of seekins element so a 22 inch barrel.
Out of 3 different 5 shot groups had a max ES of 17 and SD of 7.
Groups were around .5 moa plus or minus a little depending on the day.

 

[Klransom]

 

[TxLite]

73.0gr of N570
About 12 thousandths off the lands.

That’s where I ended up as well in my 18”, but 65 thousandths off with 180 Berger hybrids.

 

[goathunter]

73.0gr of N570
About 12 thousandths off the lands.
2984 FPS out of seekins element so a 22 inch barrel.
Out of 3 different 5 shot groups had a max ES of 17 and SD of 7.
Groups were around .5 moa plus or minus a little depending on the day.

Curious - Is the seekins a hinged floor plate or magazine? How long is the OAL, can you seat the bullet in the case optimally?

 

[Klransom]

It's a custom carbon fiber magazine made by seekins and there is lots of room in the magazine way more than needed to reach the lands. I am seating them at 3.392.