6.5-7mm prc

[VinceMule]

Thank you Mike! I can not find a downside in either of the cases! My main concern would be the availability of brass, the cycle of shortages we are in is horrible.

I have been shooting the 7 mag since 1979, never had an issue with the belt in over a dozen rifles. I had a Larry Willis collet die for 10 years, never needed it, and sold it.

Also had a couple of 264 Winchesters and 300 Win mags, half a dozen 257 Weatherbys, custom and factory, no problems with belts in any of them.

Due to the length of the VLD bullet, mag constrictions of a short action, I would be very leary of boxing myself in with such short Cartridge Base to ogive overall length as I did in (2) 6/284 and (2) 25/284's on a Short action, Those 4 mistakes cured me of the "short action" affliction forever, thanks to my old German Gunsmith, Joe Wagner.

 

[LTH181818]

7 Mag has the same capacity as the 7 PRC, correct?

264 Win is a necked down 7 Mag, basically.

So, if the 6.5 PRC is a necked down 7 PRC, the 6.5 PRC is equal in the case capacity of the 264 Win mag.

The advantage goes to the Shorter/Fater case in theory. SAAMI may have rated the PRC case at a higher pressure than the 264/7 Rem mag, I don't know the answer to this.

SAAMI increased the pressure specs several years back. The reloading books always very conservative.

 

[K.E.C. Darkside]

Just think 6.5-300wsm. It would have caught on already. If Id do anything with the 7PRC, it would be neck it up to a 30

Hi Alex, have you measured the H2O in 300wm and 7prc. I was looking at 7 to 30. You freak me out sometimes. Thanks David Ps. Even thinking of a 33.

 

[Hydra6]

I like listening to the Hornady podcasts. They have one podcast focused on the 65PRC, another on 7PRC, and a third on 300PRC. All three cases are different and they share their thoughts on the sizing of each case.

 

[Mike D Texas]

Thank you Mike! I can not find a downside in either of the cases! My main concern would be the availability of brass, the cycle of shortages we are in is horrible.

I have been shooting the 7 mag since 1979, never had an issue with the belt in over a dozen rifles. I had a Larry Willis collet die for 10 years, never needed it, and sold it.

Also had a couple of 264 Winchesters and 300 Win mags, half a dozen 257 Weatherbys, custom and factory, no problems with belts in any of them.

Due to the length of the VLD bullet, mag constrictions of a short action, I would be very leary of boxing myself in with such short Cartridge Base to ogive overall length as I did in (2) 6/284 and (2) 25/284's on a Short action, Those 4 mistakes cured me of the "short action" affliction forever, thanks to my old German Gunsmith, Joe Wagner.

I'm with you. I've been shooting belted magnums for probably 40 years with no Ill effects.

I also agree that the 6.5-284 and likely the PRC are better suited for a long action or at least a medium/XM length action.

 

[VinceMule]

Brass shortage is killing us. Few know how to form cases, nor have the inclination to do so.

Thank you guys for correcting my thinking on the 6.5 PRC! I have not seen a reamer print yet for the 6.5 or the 7 PRC.

I just completed a build on a 28 Nosler that shoots the 180s at 3080 fps with H1000 into tiny bug holes. I think that the 7 PRC will do the same with a lot less powder, but I am guessing.

 

[Mike D Texas]

Brass shortage is killing us. Few know how to form cases, nor have the inclination to do so.

Thank you guys for correcting my thinking on the 6.5 PRC! I have not seen a reamer print yet for the 6.5 or the 7 PRC.

I just completed a build on a 28 Nosler that shoots the 180s at 3080 fps with H1000 into tiny bug holes. I think that the 7 PRC will do the same with a lot less powder, but I am guessing.

I don't see it running with the 28 Nosler unless you are shooting very mild Nosler loads or very stout PRC loads.

 

[VinceMule]

Mike, I like to shoot the most accurate loads that are usually within 2.5g of what is a max load for the barrel/reamer design with AGD brass which is tough brass. I never try and back off to save barrel life or push the limits to get another 75 fps, opting for the confidence that the most accurate will give.

I like trying different cases, some will show to be unbelievable hand-down winners. The short fat issue is not to be scoffed at, like the 7 RSAUM....but no brass is available. I am hoping that AGD or others will invest in machinery to keep up with production demands so the shooting industry can grow. Dies matching reamer design is a major issue, and I believe that I have read where Alex Wheeler is addressing this issue now regarding the 7 PRC.

The 6.5/7 PRC with a 156g Berger is going to be a hands-down winner. I am scared to jump on board with brand new things, been busted too many times. On a hunting rifle, brass needs to be .005 under the chamber dimension in the web(if not more), and if it is not, you will have many issues. Small base sizers will not exist on new cartridges for a few years.

 

[Wild Monkey]

My .277 fetish comes from first hand experience here in Texas. I don't know what it is about that caliber, but things just seem to go down faster with it? The faster you push it, the better it does. Seems like the new 7prc case is just about right to make the heavy .277 work like a charm? When I get to that point again, this will be my next build....I Like my .277s and don't have one in the barn right now

I know I'm late to this thread but why aren't you going 6.8 Western? It seems like the perfect choice for 170 Grains Bullets.

 

[Alex Wheeler]

Hi Alex, have you measured the H2O in 300wm and 7prc. I was looking at 7 to 30. You freak me out sometimes. Thanks David Ps. Even thinking of a 33.

Ya, its going to be close. Probably between a wsm and wm. Not that its necessarily going to be better. But we like to try things, specially with Lapua making the brass (I assume they will). I have had the 30 reamer since before they announced the 7prc. I doubt it will really catch on. Really overbore stuff, especially the smaller bores are just a real pain to deal with. Tough to get in tune and tougher to keep in tune. The gains that you see playing on a ballistics calculator start to loose luster when the groups are bigger. Not to mention those heavier bullets buck the wind better than the ballistics calculators show. The 33 with a 225-250 in it would make a nice mild 33. Do everything you could ever need out to moderate ranges.

 

[K.E.C. Darkside]

Ya, its going to be close. Probably between a wsm and wm. Not that its necessarily going to be better. But we like to try things, specially with Lapua making the brass (I assume they will). I have had the 30 reamer since before they announced the 7prc. I doubt it will really catch on. Really overbore stuff, especially the smaller bores are just a real pain to deal with. Tough to get in tune and tougher to keep in tune. The gains that you see playing on a ballistics calculator start to loose luster when the groups are bigger. Not to mention those heavier bullets buck the wind better than the ballistics calculators show. The 33 with a 225-250 in it would make a nice mild 33. Do everything you could ever need out to moderate ranges.

Thank you for responding. I'm from Wv, so the 33 interested me, looks like it would compete with 338wm. Great medium range cartridge. The 7prc case would allow less bullet in the case, like they are doing with all the PRC. Just a thought.

 

[stazmania]

The prc family of cartridges is a very well balanced case design/powder column, neck length for caliber family/very practical. NOW for me to hot rod one of these cartridges, I don't want to blow out the case, shorten the neck steepen the shoulder angle, when the easy button is to neck them down one caliber. 6mm-6.5 prc, 6.5-7 prc or 7mm-300 prc now thats the easy button to a muscle car, without the headache and expense of a top fuel dragster. And of course this is only my opinion, "so don't let it bother you" but if you are going this route you should probably consider a long barrel. If you want a short barrel just stay with factory cartridge. Of all the cartridges mention as wild cats the only one that is necked up that interests me would be the 338-300 prc.

 

[stazmania]

Primal rights has a video out on the 6mm prc that is interesting. If you watch that video it will give you a pretty good idea of what to expect with a big brother version the 6.5x7 prc or even the 7mm x 300 prc.

 

[scottw2119]

Primal rights has a video out on the 6mm prc that is interesting. If you watch that video it will give you a pretty good idea of what to expect with a big brother version the 6.5x7 prc or even the 7mm x 300 prc.

The 7-300 prc is a hammer I have built a few of them and they flat perform