Yep. Look at the reamer specs and they're VERY close. Hornady had the idea to push the shoulder back on the 375 Ruger case right after the case was released. I have a copy of a 338 Hornady Match reamer print from almost 10 years ago and the shoulder/body dimensions are almost identical to the 300 PRC.
7mm PRC
- Thread starter WahooYahoo
- Start date
Help Support Long Range Hunting Forum
Yep. Look at the reamer specs and they're VERY close. Hornady had the idea to push the shoulder back on the 375 Ruger case right after the case was released. I have a copy of a 338 Hornady Match reamer print from almost 10 years ago and the shoulder/body dimensions are almost identical to the 300 PRC.
JJMoody
Well-Known Member
My only problem with the PRC family is that it's not a family at all!! Hornady should have separated the big PRC and little PRC with different nomenclature. A 7 PRC and 7 PRC are totally different animals. I thought this thread was going to be about the 7 PRC, which I was a bit intrigued by, but the 7 PRC is just more white noise in a market inundated with 7 this, 6.5 that yadda yada..... 
The 7LRM is, I suppose, exactly or nearly exactly, what the 7PRC would be. And I suspect that the 7LRM is just about all I want in a 7 except $4 pieces of Hornady brass.
The 300 PRC is for several reasons (at least in LR terms) the cats pajamas. Soon the choices for brass in 300PRC will be abundant. That being said, how reasonable would it be to form 300PRC brass into 7LRM brass because the outcome would be essentially the 7PRC?
Also to JJMoody's point, the 6.5 PRC and 300 PRC are so far apart in every respect except the parent case, they should not be considered anymore related than the 264WM and the 375 H&H.
The 300 PRC is for several reasons (at least in LR terms) the cats pajamas. Soon the choices for brass in 300PRC will be abundant. That being said, how reasonable would it be to form 300PRC brass into 7LRM brass because the outcome would be essentially the 7PRC?
Also to JJMoody's point, the 6.5 PRC and 300 PRC are so far apart in every respect except the parent case, they should not be considered anymore related than the 264WM and the 375 H&H.
I agree to this. When they brought the .300 PRC out, I was thinking it was really dumb on their part to put it in the same "family" as the 6.5 PRC. Because just like the 6.5 Creedmoor, I'm sure they'll want to build off the PRC cases and expand the caliber offerings. Now what do you name the 7mm-300 PRC? Because 7-300 PRC sounds more like a wildcat than an actual SAAMI spec cartridge. And to just name it a 7mm PRC would really confuse people, because 6.5 and 300 PRC are already confusing enough.My only problem with the PRC family is that it's not a family at all!! Hornady should have separated the big PRC and little PRC with different nomenclature. A 7 PRC and 7 PRC are totally different animals. I thought this thread was going to be about the 7 PRC, which I was a bit intrigued by, but the 7 PRC is just more white noise in a market inundated with 7 this, 6.5 that yadda yada.....
You could form LRM brass from 300 PRC, but it would probably take three steps. The shoulder on the LRM case is about .160" farther back than the PRC, so you'd have to push the shoulder back a bit. I just test formed a case from a piece of 375 Ruger brass to see how involved it would be. I used a 338 RCM die to go down to 338 and push the shoulder back to 1.965". Then used a 300 RCM die to neck it down to .308. Final step was to use a 6.5 PRC bushing die with the bushing removed to neck it down one last time before running a 7mm expanding mandrel into the neck. One last trim and the case is good to go. Going from 300 PRC I would use a 338 RCM to move the shoulder back, 300 RCM to go down to .308 and then finish with a 7 LRM die. I'd probably anneal at least once before running the case into the LRM die.
Wild Monkey
Well-Known Member
- Joined
- Oct 16, 2017
- Messages
- 426
Maybe just call it what it is the 7mm-30 Newton Improved??
Maybe just call it the 7mm-30 Newton Improved??
Maybe just call it the 7mm-30 Newton Improved??
Could call it a Newton, but that doesn't solve any problems. It's more difficult to get dies and brass than it would be for LRM. But I get it. It's been done, it just never made it to the show.
MudRunner2005
Well-Known Member
Or "ripoff"...That's more appropriate.
Danny1788
Well-Known Member
That is exactly what a 28 nosler does with a 195 if you don't hot rod it to hard. The only thing I could think of that the 7-300PRC Or 7LRM has over the nosler case it that its not a rebated rim. Other then that the Nosler is what your looking for. If you want less velocity use the 7 blaser case. The 7 practical is a necked down 300WM which would be almost close to the same case capacity as the Larger PRC case, but it has a belt.
Longshot284
Well-Known Member
- Joined
- Apr 22, 2017
- Messages
- 78
I think one of the benefits of a 7 PRC (assuming less velocity than a 28 Nosler)case would be the standard SAAMI chamber dimensions would be appropriately drawn and factory chambered rifles with factory loaded ammo would have a much better chance at being accurate right out of the box - atleast that's the case with the rest of the PRC and Creedmoor cartridges. Not necessarily a huge benefit to everyone, but not everyone is building custom rifles.
Or "ripoff"...That's more appropriate.
A rip-off of what? There is no 7mm Newton. Were you critical of the 28 Nosler when it came out? It's just a rip off of the 7mm Dakota. A 7mm/300 PRC would be dimensionally different than anything else out there. It would land in the same performance bracket as a number of other chamberings, but that's never stopped other rounds from being a success.
If a different wildcatter had presented the same idea, would it be a good idea then? What makes one person's idea to modify/improve a case a rip-off and a different person's idea to do the same thing some sort of brilliant cure to all that's wrong with the shooting world?
AFraser
Well-Known Member
Hornady does differentiate; the smaller one is designated in mm & the larger in inches.
So....7 PRC versus 284 PRC?
So....7 PRC versus 284 PRC?
Wild Monkey
Well-Known Member
- Joined
- Oct 16, 2017
- Messages
- 426
What I think he's getting at is the Newton doesn't get credit for the 300 PRC is all. I'm a fan of a PRC in 7mm (short Von Hoff). I was thinking of a smaller shoulder though .507". It really is no mans land as there are no readily available dies in this size in 7mm unless it's a custom.
Creedmoor shooter
Well-Known Member
Show us on the doll where big bad hornady hurt you......Or "ripoff"...That's more appropriate.
