Model P Magnum bolt face

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aaronraad
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Model P Magnum bolt face

#1 Postby aaronraad » Wed Apr 03, 2013 2:12 pm

The new Barnard finally arrived.

I thought I'd take a photo of it before I disfigure it. Just to the left is the new case she is made to hold.

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DannyS
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#2 Postby DannyS » Wed Apr 03, 2013 7:28 pm

I like the Olivetti type writer, do you have it connected to your pc :D
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RDavies
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#3 Postby RDavies » Thu Apr 04, 2013 4:33 pm

What case is that, I cant make it out?
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#4 Postby aaronraad » Thu Apr 04, 2013 5:04 pm

DannyS wrote:I like the Olivetti type writer, do you have it connected to your pc :D


Couldn't get to work with the PC, but it works a treat on a touchscreen tablet!
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#5 Postby aaronraad » Thu Apr 04, 2013 7:19 pm

RDavies wrote:What case is that, I cant make it out?


Good one Rod, pick out the most important part of the project in the photo! The other critical item is back with the die maker.

The cartridge designer missed the chance to see the cartridge fired, so all the performace aspects are purely calculated estimates. I want to get it right before publishing anything.

It has inspired my 8mm design for later this year/early next year, which I hope to register under the same proprietary name used by the cartridge designer.

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#6 Postby AlanF » Thu Apr 04, 2013 8:23 pm

My measurements suggest a shortened 338 Lap case and and .270 (???) cal. Or maybe 7mm with a turned neck?

Alan
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#7 Postby aaronraad » Thu Apr 04, 2013 11:14 pm

AlanF wrote:My measurements suggest a shortened 338 Lap case and and .270 (???) cal. Or maybe 7mm with a turned neck?

Alan


Close, you have ot allow for a bit of parallax.
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#8 Postby macguru » Fri Apr 05, 2013 6:56 am

I think its a shortened 30-338 lapua, which is a good thing because the full case is a barrel burning monster :twisted:
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#9 Postby AlanF » Fri Apr 05, 2013 7:38 am

On the photo, the neck diameter measures approx 52% of the head diameter. The 338 Lap has a 0.578" head diameter. Calculating 52% of 0.578" is about 0.306". I'd expect a 30 cal to be at least .330" at the neck? If its not a 7mm then is it a 6.5mm before neck turning?

Alan
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#10 Postby macguru » Fri Apr 05, 2013 7:49 am

well then its a 7mm-338 in a shortened case ......
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#11 Postby Quick » Wed Jul 31, 2013 12:07 pm

Aaaron, Care to share what this new case is?
Shaun aka 'Quick'
Yanchep, Western Australia

308 Win F/TR & F-S
7mm F-Open Shooter.
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#12 Postby aaronraad » Wed Jul 31, 2013 1:24 pm

25/60 SMc based on a WSM case.

Hopefully I can do the late By Smalley justice.
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Seddo
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#13 Postby Seddo » Wed Jul 31, 2013 4:05 pm

Thats what you are making the new 25cal projie for.
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#14 Postby aaronraad » Wed Jul 31, 2013 4:21 pm

Correct. The 1:8" barrel should be able to stabalise something long.
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#15 Postby RDavies » Wed Jul 31, 2013 7:42 pm

Have you thought about a 7mm version as well?
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