300 prc & 375 Ruger

[Vaultman]

Is the 300 prc really just a necked down 375 ruger? I hear on a lot of pages that the prc is 'based on' the ruger but I would guess that means they are close. However I suspect if it were the same just necked down, I would have read somewhere that was the case. Anyone know the diff? Only some of my reloading books have the 375 ruger, and none have the 300 prc.

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[Swampr]

Yes. 375 Ruger is the parent case. I have a 338-375 Ruger and I use both 375 Ruger and 300 PRC brass.

https://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=1&ved=2ahUKEwiWhcXNudXoAhW0IDQIHUqXAVAQFjAAegQIARAB&url=https%3A%2F%2Fwww.hornady.com%2F300prc&usg=AOvVaw3L9UtVP2ZtWODLom_U-MuZ

 

[DeanMk]

...curious...How does the .300 PRC compare to the .308 Norma Magnum?

 

[P7M13]

375 Ruger is a very interesting case that has become the parent of many other cartridges. I shoot it in a Rem 700 custom 7mm Long Range Magnum (Gunwerks' wildcat design).
Modifying the case is fairly simple - you just have to be patient and reform the cases s-l-o-w-l-y.
While many comment, "why do something the 7mm Rem Mag does well," it'll send a 185gr projectile at 3000 FPS, ~300 FPS faster than the 7 Rem, using 20 grains less powder than the 7mm RUM and 2-3x the barrel life of a 7RUM.

 

[trevi]

Interesting! And, I sold my 375 Ruger. Shame on me?

 

[VanceInWA]

...curious...How does the .300 PRC compare to the .308 Norma Magnum?

You got me curious, too, so decided to do a quick comp. Used Hornady reloading manual, but unfortunately they don't yet have ELD-X reload data for 308 Norma Magnum. That said, here is some of the available info to compare the two cartridges:

 

[DeanMk]

Seems like the PRC is just that much more than the old Norma Mag.
Too bad they didn't test the heavier bullets in the NM.
For me, personally, any .30 cal round that can push around 220 gr. + like it was a 150 grainer, certainly has my attention.
Thanks for posting that, Vance.

 

[No_Regerts]

...curious...How does the .300 PRC compare to the .308 Norma Magnum?

The 300 Norma Magnum may be a better comparison. The 308 Norma is just a 2.5 inch standard belted case a la 7mm Rem Mag or 338 Win Mag.

 

[DeanMk]

Maybe Regerts. I looked into that and the .300 NM looks like it might even be shorter, yet (case length difference is like only .070", but its also .070" FATTER than the .308 NM).



However, the reason for this post is I found an article comparing the .300 PRC to the.300 Winchester Magnum, .300 Remington Ultra Magnum, .300 Norma Magnum, and .30 Nosler.
Check it out....

300 PRC From Hornady Sets New Standard, Built to Win

There are performance gaps among many of today's rifle cartridges, not obvious to most of us, that beg to be filled. The 300 PRC fills that gap.

www.recoilweb.com

 

[DirectDrive]

The 300 Norma Magnum may be a better comparison. The 308 Norma is just a 2.5 inch standard belted case a la 7mm Rem Mag or 338 Win Mag.

This ^^^
That's more of a fair fight.
I think 300 PRC is a better design.

 

[JRuby]

375 Ruger is a very interesting case that has become the parent of many other cartridges. I shoot it in a Rem 700 custom 7mm Long Range Magnum (Gunwerks' wildcat design).
Modifying the case is fairly simple - you just have to be patient and reform the cases s-l-o-w-l-y.
While many comment, "why do something the 7mm Rem Mag does well," it'll send a 185gr projectile at 3000 FPS, ~300 FPS faster than the 7 Rem, using 20 grains less powder than the 7mm RUM and 2-3x the barrel life of a 7RUM.

disregard

 

[VanceInWA]

Response to JRuby's question: Chamber pressures are not too radically different. Here are comparative SAAMI maximum average chamber pressures (PSI):

• 300 PRC = 65,000
• 300 Win Mag = 64,000
• 308 Norma Magnum = 64,000 (set by C.I.P., not SAAMI)
• 300 Norma Magnum = 61,000
• 30 Nosler = 65,000
• 7mm RUM = 65,000
• 7mm Rem Mag = 61,000
• 375 Ruger = 62,000
• 338 Win Mag = 64,000
• 338 Norma Magnum = 62,500

 

[DeanMk]

...and if I'm not mistaken, all of those cartridges can trace their parentage back to two rounds; The .375 H&H and the .404 Jeffery.

 

[JRuby]

Assuming same rifle model different chambering - why could one not run everything at 65K, the only reason I can think of is that most don't have the capability of measuring that pressure. Figure something like a MK 5 Weatherby would be able to do this easily.

 

[DeanMk]

Maybe because not everyone wants to shoot (and/or can afford) the Weatherby rifle?
I'm thinking the popular consensus would be a Tikka T3 chambered in ANY of those cartridges Vance listed.

 

[DeanMk]

Response to JRuby's question: Chamber pressures are not too radically different. Here are comparative SAAMI maximum average chamber pressures (PSI):

• 300 PRC = 65,000
• 300 Win Mag = 64,000
• 308 Norma Magnum = 64,000 (set by C.I.P., not SAAMI)
• 300 Norma Magnum = 61,000
• 30 Nosler = 65,000
• 7mm RUM = 65,000
• 7mm Rem Mag = 61,000
• 375 Ruger = 62,000
• 338 Win Mag = 64,000
• 338 Norma Magnum = 62,500

Cudos on the research.
Good post.

 

[DirectDrive]

...and if I'm not mistaken, all of those cartridges can trace their parentage back to two cartridges; The .375 H&H and the .404 Jeffery.

And it took decades to figure out that the belt was not needed.

 

[DeanMk]

We spent all those decades being super enamoured with the belt.
The belt was seen as an avenue (the only avenue in a lot of minds) to creating super powered cartridges of varying caliber.
Changing minds took a lot longer to accomplish, once upon a time.

 

[JRuby]

Choose your reputable rifle manufacture - the question remains why could one not run all cartridges at the same 65K pressure? The manufacturer of the rifle is not the question the quality of firearm is important. Is there that much difference in the case/ brass?

 

[JRuby]

I still like that belt on my 300 and 375 H&H