7 mmm PRC SAAMI Spec

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superx10
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Joined: Wed Aug 19, 2015 9:32 am

7 mmm PRC SAAMI Spec

#1 Postby superx10 » Sat Jul 02, 2022 8:03 am

Cartridge and Chamber Designs Newly Accepted by SAAMI
Below is a link to a chamber print of the 7 MM PRC
My Question to F open shooters has it much advantage over the 7 mm SAUM ( If Any) will brass amiability be any better, performance ect , will our local gun smiths get a reamer for this new cartridge? It Has some impressive stats.

7mmprc.docx
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Last edited by superx10 on Sat Jul 02, 2022 11:01 am, edited 1 time in total.

KHGS
Posts: 934
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Location: Cowra NSW

Re: 7 mmm PRC SAAMI Spec

#2 Postby KHGS » Sat Jul 02, 2022 8:33 am

Gunsmiths and barrel makes will love you and this cartridge. If I may ask, what "improvement" over the 7mm SAUM are you seeking?
Keith H.

Rich4
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Location: Chinchilla

Re: 7 mmm PRC SAAMI Spec

#3 Postby Rich4 » Sat Jul 02, 2022 10:31 am

Only one I can think of is available lapua brass

superx10
Posts: 325
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Re: 7 mmm PRC SAAMI Spec

#4 Postby superx10 » Sat Jul 02, 2022 11:03 am

I have edited my post to include "if any"

The brass would probably necked up 6.5 brass

KHGS
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Location: Cowra NSW

Re: 7 mmm PRC SAAMI Spec

#5 Postby KHGS » Sat Jul 02, 2022 11:32 am

I can't see any positives, barrel life (lack of) would be the main issue, cost and availability of brass another. There are other issues such as a one caliber neck.
Keith H.

BATattack
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Re: 7 mmm PRC SAAMI Spec

#6 Postby BATattack » Sat Jul 02, 2022 7:11 pm

The new SAMMI 7PRC is too big. It sits somewhere between the 7SAUM and 7WSM in case capacity. As far as I know Lapua aren't making brass for this at least at the moment..

The 6.5PRC necked up to 7mm in theory looks about perfect and where I'd throw my money. Capacity somewhere between 7SAUM and .284, Lapua already making brass, magnum case head should make primer pockets hold up well, short fat powder column should give good ES numbers and accuracy. I think we will be seeing a lot more on the line in the next few years.

superx10
Posts: 325
Joined: Wed Aug 19, 2015 9:32 am

Re: 7 mmm PRC SAAMI Spec

#7 Postby superx10 » Sat Jul 02, 2022 7:39 pm

Thanks Bat sound like the way to go.

GSells
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Location: Qld

Re: 7 mmm PRC SAAMI Spec

#8 Postby GSells » Sat Jul 02, 2022 9:41 pm

superx10 wrote:Thanks Bat sound like the way to go.

U thinking of coming back to FO ?

Matt P
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Re: 7 mmm PRC SAAMI Spec

#9 Postby Matt P » Sun Jul 03, 2022 10:45 am

What BATattack said, only issue I see necking up the 6.5 is the neck will be very short.

KHGS
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Location: Cowra NSW

Re: 7 mmm PRC SAAMI Spec

#10 Postby KHGS » Sun Jul 03, 2022 12:29 pm

Matt P wrote:What BATattack said, only issue I see necking up the 6.5 is the neck will be very short.


Short neck with donuts. You always get donuts straight up when you neck up, but not so much when necking down.
Keith H.

BATattack
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Re: 7 mmm PRC SAAMI Spec

#11 Postby BATattack » Sun Jul 03, 2022 1:00 pm

Matt P wrote:What BATattack said, only issue I see necking up the 6.5 is the neck will be very short.


Agreed. Would be interesting to try the SLR trick and increase the shoulder angle to give a bit more neck length. At the end of the day most are neck turning and aren't taking virgin brass to a serious match.

superx10
Posts: 325
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Re: 7 mmm PRC SAAMI Spec

#12 Postby superx10 » Sun Jul 03, 2022 1:13 pm

Hi Sellsy
mmm Maybe the the cost of the 308 heavies in FTR is concerning a 180 7mm hybrid is looking better with each price rise.

Ken Melgaard
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Location: West Wodonga, Vic

Re: 7 mmm PRC SAAMI Spec

#13 Postby Ken Melgaard » Mon Jul 04, 2022 7:32 pm

The 6.5 PRC makes an interesting round necking up to 7mm & 30 caliber, am looking at the case as available from Lapua unlike the 7/300 SAUM case
A photo and H2O for comparison
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GSells
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Location: Qld

Re: 7 mmm PRC SAAMI Spec

#14 Postby GSells » Wed Jul 06, 2022 4:51 pm

superx10 wrote:Hi Sellsy
mmm Maybe the the cost of the 308 heavies in FTR is concerning a 180 7mm hybrid is looking better with each price rise.

Yes it’s a real problem even getting any sort of Bergers ! For me the lack of Componets has made me step back from the sport a tad , till it fixes itself! Maybe just doing local Opms! ( especially the cost of fuel etc ) sorry a little bit of topic ? Regards Sellsy!

superx10
Posts: 325
Joined: Wed Aug 19, 2015 9:32 am

Re: 7 mmm PRC SAAMI Spec

#15 Postby superx10 » Sun Jul 10, 2022 2:37 pm

That's some good info Ken What the H2o capacity of the 7 saum?


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