7 PRC Velocities / FACTORY Ammo

[Fever Buck]

Seems like everyone is shooting around 2850-2870fps out of the 22” barrels.

 

[RAM190Hog]

Compared Hornadys ELDX and Federals ELDX (175gr) out of my 22” Seekins Element 7PRC.

The Federals were 120fps faster…

 

[TxLite]

Compared Hornadys ELDX and Federals ELDX (175gr) out of my 22” Seekins Element 7PRC.

The Federals were 120fps faster…

View attachment 604403

Any pressure signs on the federal?

 

[RAM190Hog]

No observed issues…

 

[jbosk15808]

Compared Hornadys ELDX and Federals ELDX (175gr) out of my 22” Seekins Element 7PRC.

The Federals were 120fps faster…

View attachment 604403

Is it a powder difference or seating depth difference between the Hornadys and federal?

I got 6.5 boxes of Hornadys 175s with same lot numbers that I plan on deconstructing due to over pressure issues. Seems like it might be worth it to try replicate the Federals

 

[Fever Buck]

Compared Hornadys ELDX and Federals ELDX (175gr) out of my 22” Seekins Element 7PRC.

The Federals were 120fps faster…

View attachment 604403

Blows me away that you’d see that much jump in velocity between what should be a standardized cartridge. Any noticeable jump in recoil?

 

[TxLite]

No observed issues…

I’d be interested to see a comparison of cartridge overall length between the two. That’s a significant jump in velocity

 

[RAM190Hog]

I’d be interested to see a comparison of cartridge overall length between the two. That’s a significant jump in velocity

Federal on the left, Hornady on the right. Federal is seated deeper, surprisingly. Heard a lot of discussion of Hornady possibly backing off on powder loads…certainly seems possible.

 

[waitforit]

180eldm, just shy of 2900 out of my Ruger american with 24" barrel.

 

[Lemhi]

22” proof prefit. Hornady precision hunter with the 175eldx runs 2880fps. Haven’t tested the 180’s or federal ammo yet.

 

[Fever Buck]

View attachment 607100
22” proof prefit. Hornady precision hunter with the 175eldx runs 2880fps. Haven’t tested the 180’s or federal ammo yet.

How many rounds through barrel?

 

[Lemhi]

How many rounds through barrel?

Exactly 60 rounds.

 

[Way Overkill]

I got a 7 PRC 20” Preferred Barrel Blanks barrel in carbon fiber with about 45 rounds through it. I’m shooting 175 grain ELD-X. Velocity has been all over the place, but I am assuming this is mostly because of my chronograph which isn’t the greatest (Competition Electronics ProChrono). Highest velocity recorded was 2823 and the lowest was 2679. Removing some of the outliers, and I feel like the average is about 2750.

Interesting discussion on the different lot numbers producing different velocities. I however see variation in the same box (again, the chrono is probably largely to blame).

 

[Swampcruiser]

I ordered a bunch of the Federal - I hate hunting elk with the ELD-X but I'm stuck with it. The Hornady CX was all over the place and the Hornady ELDx was money with my lowly factory Browning X bolt- .6" groups. I am seeing signs of pressure with the Hornady though- primers punched in and stiff bolt lift as well as some bit of imprinting on the bolt face- very minor but there. Hornady ammo sux for sure--- Please Barnes please get the TTSX out!!!

 

[AirborneA$$hole]

View attachment 585056 I think its interesting Federal seated the 175 eldx so much deeper. Theres definitely room in my rifle for less jump but they were still accurate and obviously ~200 fps faster.

I'm new to reloading, would the increase in velocity have something to do with the case fill and compressing the powder?

 

[AirborneA$$hole]

I ordered a bunch of the Federal - I hate hunting elk with the ELD-X but I'm stuck with it. The Hornady CX was all over the place and the Hornady ELDx was money with my lowly factory Browning X bolt- .6" groups. I am seeing signs of pressure with the Hornady though- primers punched in and stiff bolt lift as well as some bit of imprinting on the bolt face- very minor but there. Hornady ammo sux for sure--- Please Barnes please get the TTSX out!!!

7mm PRC – Copper Creek Cartridge Co.

coppercreekcartridgeco.com

7mm PRC - Hendershot’s Sporting Goods, Inc.

We are pleased to welcome the new 7mm PRC to our line-up of "Extreme" Custom Ammunition! If you don't handload and want more ammo choices, we've got you covered with an ammo option that cover any application.

hendershots.net

I've personally tried Hendershot and they are extremely consistent.

 

[Flynhunt]

24” proof carbon. Precision Hunter 175: Average 2934, Sd 25, ES 109, several rounds with heavy bolt lift. Precision Match 180: Average 2830, Sd 21, Es 51

 

[Swampcruiser]

I shot the Federal ELDX 175 today. Much better, every bit as accurate with a few 1.5” groups at 200. No heavy bolt lifts and no punched out primers.
I’ll check into the above- thanks. The Federal will have to be my elk medicine as it’s late in the game.

 

[WYCFM1]

I'm new to reloading, would the increase in velocity have something to do with the case fill and compressing the powder?

Yeah also the bullet bearing surface stays in the neck for more time which can contribute to more pressure before it exits the case neck and clears the freebore into the lands…it’s actually a tactic behind some company’s rifle designs when speed is the big seller I’ve heard


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[wind gypsy]

Yeah also the bullet bearing surface stays in the neck for more time which can contribute to more pressure before it exits the case neck and clears the freebore into the lands…it’s actually a tactic behind some company’s rifle designs when speed is the big seller I’ve heard

That's not how things work and nobody designs cartridges with the desire to stuff a bullet deep in the case to increase velocity to my knowledge.

It seems like you're confusing a chamber with long freebore for how deep a bullet is seated. Long freebore allows for more powder to be burned at the same pressure because it allows the bullet to be further forward when before reaching resistance from the lands of the rifling and thus has more volume behind it for the burning powder compared to if it had shorter freebore. It also allows you to seat longer bullets out of the powder space.

People seem to give way too much credit for seating depth on velocity/pressure. If youre not on the lands, it just isnt going to make that much difference until you're playing at the extreme ends.