7prc

[Diamond07]

Yeah I hate to say it but that's 7RM numbers in a 24 inch tube.

[ATTACH]1107276[/ATTACH]


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With a 175 grain projectile?

[duckhunter175]

For me it seems like a good option.
Shoot heavy for caliber bullets out of a more efficient case using a shorter barrel with good factory ammo options.
I don’t have time to reload and like to shoot at longer ranges.

Certainly could be!!

What is longer range and are you hunting at those ranges? If so-- what type of critters?

You can run a 140gr 6.5mm from a 24" barrel from wayyyyy more factory options in both cartridge and rifle than you will ever be able to find from a 7PRC and have plenty to spare at distances of 1000y+ for target shooting.

If you want heavier bullets or heavier construction for hunting at those distances then there are certainly better cartridge and rifle options for that niche, especially in the factory realm in a long action.

I also think the factory ammo (heavy for cal) is gonna be considerably hard to come by-- 175gr ELDX bullets alone have been unobtanium for well over a year-- so if they (H) are stock piling to load their ammo then I'm sure the box price will be painful. Otherwise you have an ELDM or a lightweight mono.

[duckhunter175]

With a 175 grain projectile?

Yea it looks like they ran 175gr ELDX for their handload development from a 24" Krieger.

https://hawkinsprecision.com/2022/10/24/reloading-for-7-prc/

And-- more impressively- the factory ammo in the same projectile and rifle achieved 3040fps--

[Silentnight]

Certainly could be!!

What is longer range and are you hunting at those ranges? If so-- what type of critters?

You can run a 140gr 6.5mm from a 24" barrel from wayyyyy more factory options in both cartridge and rifle than you will ever be able to find from a 7PRC and have plenty to spare at distances of 1000y+ for target shooting.

If you want heavier bullets or heavier construction for hunting at those distances then there are certainly better cartridge and rifle options for that niche, especially in the factory realm in a long action.

I also think the factory ammo (heavy for cal) is gonna be considerably hard to come by-- 175gr ELDX bullets alone have been unobtanium for well over a year-- so if they (H) are stock piling to load their ammo then I'm sure the box price will be painful. Otherwise you have an ELDM or a lightweight mono.

I’d like to shoot a 7mm 180gr bullet out of a 20” barrel going 2800+ fps using factory ammo.
Which other factory offering would you recommend?

[duckhunter175]

I don't think you're gonna find factory 180gr 7mm in any cartridge that is gonna break that MV in a 20" barrel except maybe 28N.

The MVs posted for factory 7prc are from 24" test barrel and are 2975 and 3000 fps as listed MV for 180ELDM and 175ELDX. Obviously Hawkins saw a slighty higher MV from their Krieger barrel- other testers saw 100fps less from their rifles. This would be in line with common knowledge that most factory ammo runs slower than advertised. My personal experience with Hornady Match ammo and Hornady Precision Hunter ammo is they run about 100fps below advertised when barrel length is held constant.

So-- if you start at a conservative MV for factory ammo -- and then lop 4" off the barrel and only lose a small 25fps per inch you will still likely be below your goal MV-- if that MV loss per inch is greater you will be well below 2800fps.

Meanwhile there are already lots of great components (and data) to run other cartridges (7saum) in a short or medium action and get really close or meet those speeds.

True-- not factory ammo but if short/compact is your overall goal then why not built off a short action to begin with??

But if you desire such a niche (short rifle OAL) with top end heavy for cal bullets in a short barrel at top end velocity then you are probably trying to eek out every bit of performance and youd be better off paying for real load development and several hundred rounds of ammo as opposed to limiting yourself to factory toleranced ammo.

[canny]

I don't think you're gonna find factory 180gr 7mm in any cartridge that is gonna break that MV in a 20" barrel except maybe 28N.

The MVs posted for factory 7prc are from 24" test barrel and are 2975 and 3000 fps as listed MV for 180ELDM and 175ELDX. Obviously Hawkins saw a slighty higher MV from their Krieger barrel- other testers saw 100fps less from their rifles. This would be in line with common knowledge that most factory ammo runs slower than advertised. My personal experience with Hornady Match ammo and Hornady Precision Hunter ammo is they run about 100fps below advertised when barrel length is held constant.

So-- if you start at a conservative MV for factory ammo -- and then lop 4" off the barrel and only lose a small 25fps per inch you will still likely be below your goal MV-- if that MV loss per inch is greater you will be well below 2800fps.

Meanwhile there are already lots of great components (and data) to run other cartridges (7saum) in a short or medium action and get really close or meet those speeds.

True-- not factory ammo but if short/compact is your overall goal then why not built off a short action to begin with??

But if you desire such a niche (short rifle OAL) with top end heavy for cal bullets in a short barrel at top end velocity then you are probably trying to eek out every bit of performance and youd be better off paying for real load development and several hundred rounds of ammo as opposed to limiting yourself to factory toleranced ammo.

Don’t think you can really compare the factory loadings for 7PRC to handloads for 7SAUM. If you compare the potential of the 7PRC from a hand loading POV then it’s right there if not above what you get from the 7SAUM. Plus with it being a factory produced round, brass will most likely become more available (over time).

Also, how many factory rifles are chambered in 7SAUM? My guess is that it will much easier for someone to purchase a 7PRC factory gun vs the SAUM. Not knocking the SAUM at all as it’s a really great round, my prediction is that the 7PRC will be more readily available and more attractive.


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[duckhunter175]

Don’t think you can really compare the factory loadings for 7PRC to handloads for 7SAUM. If you compare the potential of the 7PRC from a hand loading POV then it’s right there if not above what you get from the 7SAUM. Plus with it being a factory produced round, brass will most likely become more available (over time).

Also, how many factory rifles are chambered in 7SAUM? My guess is that it will much easier for someone to purchase a 7PRC factory gun vs the SAUM. Not knocking the SAUM at all as it’s a really great round, my prediction is that the 7PRC will be more readily available and more attractive.


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Totally agree that handload vs factory isn't apple to apple--- rather the point of handload 7saum performance vs factory 7prc performance was simply to highlight the fact that if you want a compact/short/light rifle with 180s @/near 2800 then you will likely have to handload anyway so why not take advantage of a cartridge that is a known quantity, has great components, offers the most when it comes to compact/light and long range.

Whether or not quality brass manufacturers pick up the 7prc is not a sure thing (I think they will eventually because of the Hornady marketing machine).

The other issues that have gone ignored are the dimensional cartridge and ammo issues that were/are growing pains for the 6.5prc and 300prc. Hopefully the 7prc doesn't go through the same iterations.

The reason there has been an absolutely massive surge in 7saum shooters is because of modern powder/bullets that allow custom rifle builders and handloaders to really maximize potential of a cartridge that was ahead of its time and that big green never got quite right.

I think that surge will certainly carry over to the 7prc because there will be factory (less expensive) rifles and factory ammo (albeit limited options) and it will do well together to a certain point.

I'm simply being the devil (7saum) advocate and enjoying the discussion.

I just think for folks who are nuanced enough in their shooting/hunting to see/need the difference in a few inches of barrel or a heavy bullet at 2800 vs 2900 they are also nuanced enough to know they won't get what they want from factory ammo to begin with and are going to handload--- which if you are going that far.... just go all the way!!

Again- if I had to rub my crystal ball I think the cartridge will be an overall success and probably receive market support eventually-- and I'd never tell someone not to buy another rifle (except that theyre eating up the 175gr ELDX ) And remember-- nothing is free*** numbers show a 125-150fps gain over the 7RM... but 6-7 gr charge increase and 18% increase in recoil!

Last thought- to me it would've been more interesting to see it on a short action like what McWhorter did with the 7'SPRC'

[muzzlebrake]

Doing what the 7mm WSM can't do but still not a short action. Fat case with longer neck and heavier bullets and more efficient powder burn and NO belted case=a good thang. JMHO

[Silentnight]

I don't think you're gonna find factory 180gr 7mm in any cartridge that is gonna break that MV in a 20" barrel except maybe 28N.

The MVs posted for factory 7prc are from 24" test barrel and are 2975 and 3000 fps as listed MV for 180ELDM and 175ELDX. Obviously Hawkins saw a slighty higher MV from their Krieger barrel- other testers saw 100fps less from their rifles. This would be in line with common knowledge that most factory ammo runs slower than advertised. My personal experience with Hornady Match ammo and Hornady Precision Hunter ammo is they run about 100fps below advertised when barrel length is held constant.

So-- if you start at a conservative MV for factory ammo -- and then lop 4" off the barrel and only lose a small 25fps per inch you will still likely be below your goal MV-- if that MV loss per inch is greater you will be well below 2800fps.

Meanwhile there are already lots of great components (and data) to run other cartridges (7saum) in a short or medium action and get really close or meet those speeds.

True-- not factory ammo but if short/compact is your overall goal then why not built off a short action to begin with??

But if you desire such a niche (short rifle OAL) with top end heavy for cal bullets in a short barrel at top end velocity then you are probably trying to eek out every bit of performance and youd be better off paying for real load development and several hundred rounds of ammo as opposed to limiting yourself to factory toleranced ammo.

I’d agree with you on pretty much everything you said. You’ll be running, at minimum, a medium action for 180s to take advantage of the full case capacity of the saum so I figure the additional 1/2” in action length is worth the convince of good off the shelf ammo.

You might be right on the speed also but for now it’s all speculation anyway. We won’t have much real world speed answers for a while unless hornady starts pumping out ammo soon.

It’s pretty much what the 7saum should have been. At that time though it was all about pushing a lighter bullet fast, which I still think works well for most. Heck a factory 7saum would probably work for what I would do most of the time but it’s pretty tough finding factory ammo for the 7saum and it’s pricey.

I find it fun to try to push a heavier high bc bullet in a shorter more handy rifle.

They definitely are not reinventing the wheel but it’ll be a nice option for those that can’t or don’t want to have to reload. Just like they did with the 6.5 creed, 6.5prc and 300prc. None were needed if you reload.

[Mike D]

Just like all of the other Hornady offerings, this is a good option for people who want to buy a factory rifle off the shelf and shoot factory ammo.

For enthusiasts that are building custom and hand loading ammo the entire PRC and Creedmoor cartridges are a big fat nothing burger.

But it’s the newest hype so people have to have it, even though there is very limited resources for ammo and even less resources for quality brass.


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[Silentnight]

Well I ended up having a 20” 7prc built. Finally got to take it out and run it over the chronograph.

Factory 180eldm went 2800fps on the money which was my goal.

hope this helps others in making a future decision

[Dtieken]

Well I ended up having a 20” 7prc built. Finally got to take it out and run it over the chronograph.

Factory 180eldm went 2800fps on the money which was my goal.

hope this helps others in making a future decision

Im getting the same MV but with Horandy’s 175ELD-X. Also a 20” build Did pick up a couple boxes of their outfitter line with the 160s. Haven’t shot these yest but hopping to pick up a few FPS

[canny]

I ended up with a Horizon Vandal Long with a 22” barrel. Current load in the works is a 175g Barnes TSX right at 3000 fps with RL26. Gearing it up for a Nilgai then will start tinkering with better BC bullets.

[tpepper70]

This is a good read and makes me happy with my decision. I'm fixing to re-barrel my Dad's old Mauser 98 that is currently in 7RM to 7PRC. I'm now very anxious to get this project underway and see the results of this newer round. I was able to find 200rds of Hornady once fired brass for dirt cheap and have all the components to reload. Now to decide on a powder. I have 7828ssc and Retumbo and plan on loading 175gr+ bullets. Decisions, decisions. Lol