Reloading 7mm PRC

[Phil Rizzo]

I've got 150 pieces of Peterson but no time to play.
Farmin in a drought now. Earlier than usual

 

[WoodPecker Hunter]

I've got 150 pieces of Peterson but no time to play.
Farmin in a drought now. Earlier than usual

SORRY. to hear that ! life is tough enuff without any extra **** thrown at ya ! Good Luck

 

[ridge86]

 

[Phil Rizzo]

Does Berger use QL for that?on several calibers I've tested it seems very conservative.

 

[ridge86]

I'm not sure about that, that's just what they sent me so I'd pass it along. I'm still shooting factory ammo myself before I start load data

 

[crashlanding]

I made it to the range to try the N570. I fired 10 rounds from 68.5-73gr (.5gr increments). Using hornady brass, CCI 250 and 184 berger hybrid target bullets seated 20 thou off lands (CBTO 2.649, OAL 3.400)

1st shot was fired on a stripped clean bore. I was having problems with the chronograph and missed 2 shots…Of course the 2 shots that I'm missing the velocity on seem to be in a good area.

68.5…2676
69.0…2816
69.5…2865
70.0…2884
70.5…2930
71.0…2953
71.5…????
72.0…3009
72.5…????
73.0…3025

.

At my chosen seating depth there was still case capacity left with 73gr of powder. With this same bullet, primer, brass and H1000 I was seeing pressure at 2950. With the N570 there maybe a slight difference in primer roundness between the lowest and highest charge if you want to see it, but nothing that would prevent me from pushing further if I wanted to. (85 degrees F on range day) POI for 71.5, 71.0 and 71.5 charges were .6 moa at 220yds. I plan on exploring that area more.

Thank you to just_jon, coyotezapper and jdwhittles for the information.

That's some great intel, thanks, I start loading maybe this week after firing 60 rounds of factories for the intial break in, I'm starting with Winchester stabal hd, see how it works, then going to try ramshot lrt which is close in burn rate to n570. I'm trying to get those high velocities with hopefully some good accuracy

 

[Phil Rizzo]

Got my dies coming now.
Y'all got me interested.!
Larry better hurry up

 

[Kimber7man]

Here's a load my gunsmith worked up. Hornady brass and 215M primers. 24" proof 8.4 twist.

 

[Phil Rizzo]

I want to try some ABLR but appears I could waste a lot of barrel life chasing my tail.

 

[dogz]

For what it's worth Phil, in both my 7 WSM and my 7 Mashburn Super the first load I tried with the 168 LRAB I had a real hummer.

8 twists in both

 

[Benny119]

My second range session with N570. I choose to load 3 shots at 72.5gr and 3 shots at 73.0gr based on velocity data from my previous range session. These groups were shot at 120yds, 65 degrees F. Labradar chrono data documented by the groups. Muzzle blast was moving the chrono so I missed 1 shot.

I plan to load more of the 73.0 load to verify that it can hold together over multiple days.

My rifle is 24" Proof Research full sendero, muzzle brakes and more titanium muzzle brake and a defiance Anti action. I have just over 300 rounds down it shooting factory ammo for brass and then trying to find a H1000 load that satisfies me. I'm hoping this N570 holds together because H1000 never really did for me.

 

[PatriotHenry]

Got my dies coming now.
Y'all got me interested.!
Larry better hurry up

Phil,
I am trying to help a friend with this cartridge. Do you have any data on sizes of neck bushings for Hornady Brass?

Thanks!

 

[Phil Rizzo]

I don't.
I got lucky and was able to get Peterson brass with the gun.

 

[Phil Rizzo]

ADG requires a .310 with my 7ss
I'm using a .308 with Peterson and PRC.
Best I can offer…