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Author Topic: 45x2 on nef  (Read 797 times)

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Offline pondenck

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45x2 on nef
« on: February 15, 2009, 04:05:32 PM »
        I am going to try one.will butstok stand up.wanted to see Far i could go .just like to build and be safe .the butssock is a week link. i am staying whithen      60.000Ipsi  I will try.
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Offline dumgunny

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Re: 45x2 on nef
« Reply #1 on: February 17, 2009, 06:29:03 AM »
Are you talking about a .458X2 American or simular? If so I don't see why the stocks wouldn't hold up. The 458 is basically a belted 45/70 and they seem to stand up to that caliber fine, there are also Handis chambered in .450 Marlin which is identical to the .458X2 except the case belt is is wider.
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Offline petemi

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Re: 45x2 on nef
« Reply #2 on: February 17, 2009, 06:42:39 AM »
I just punched a hole in my monitor trying to kill that bug.  ;D :D

Thank you for interpreting this post.  Now I understand.

Pete
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Offline Troyboy

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Re: 45x2 on nef
« Reply #3 on: February 17, 2009, 01:32:41 PM »
I wouldn't do anything till Quick weighs in on this
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Offline quickdtoo

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Re: 45x2 on nef
« Reply #4 on: February 17, 2009, 01:51:15 PM »
All I can tell ya is that Ruger #1 45-70 loads to 55kpsi work fine on the stainless Ultra Hunter frame, dunno how well it will hold up to 60kpsi. I do know that 50kpsi loads in a .300WSM won't work on a modern SB2 frame, the .555" casehead is just too big, too much breech thrust. Might not be as bad with a straight walled case though.

Tim

http://www.barnesbullets.com/images/45-70RugerNo1Web.pdf
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Offline Graybeard

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Re: 45x2 on nef
« Reply #5 on: February 17, 2009, 07:05:27 PM »
I'm of the opinion it would be a MAJOR mistake and could result in massive failure of the firearm to chamber an NEF to a belted magnum case and run it up to 60,000 psi. In the first place unless you have pressure measuring equipment you have no way to tell the difference between 60K and 100K.

If NEF feels the current platform unsafe with belted magnums and was going to design a newer larger stronger platform before offering them then that should tell you it's not a wise idea.
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Offline skifastchad

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Re: 45x2 on nef
« Reply #6 on: February 18, 2009, 05:18:28 AM »
A 450 marlin is a 458x2.1 with the added safety of a slightly longer belt so that idiots can't load it in a 300mag.

Brass is available, and with a factory barrel, you wouldn't have to make a stubbed barrel.

60,000 psi?  Absolutely no way.   At 42,000 psi, the 450 marlin is NOT fun to shoot.
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Offline petemi

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Re: 45x2 on nef
« Reply #7 on: February 18, 2009, 05:19:54 AM »
+1, Bill.

Pete
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Keep both eyes open and make the first shot good.
The growing Handi/Sportster/Pardner/Topper Family:  .22 WMR, .22-250. 223, Two Superlight 7mm-08s and one .243, .30-30,  .308, 32-20, 18 inch .356/.358 Win., Two 16.5 inch .357 Max., 18 inch 38-55 BC Carbine, 16.5 inch .445 Super Mag., .45LC, 16.5 and 22 inch .45-70s, .50 Huntsman SS, .410, 20 ga., 12 ga., 20 ga. Pardner Pump, Versa-Pack .410 - .22
[size=7.4 pt]PLEASE DONATE TO THE GBO SERVER FUND  We're closer to the goal but not there yet, we can still use more donations, thanks

http://www.gboreloaded.com/forums/index.php/topic,191112.msg1098959491.html#msg1098959491

Offline quickdtoo

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Re: 45x2 on nef
« Reply #8 on: February 18, 2009, 05:20:00 AM »
Bill makes a good point since H&R felt the need for a stronger frame for belted mag chamberings, but lack of distributor interest killed the project. But the 500S&W which is factory chambered has a larger casehead at .526"(.530" depending on who's diagram you look at) compared to the .458x2" at .513", and has a SAAMI MAP of 60kpsi, but existing load data has a max operating pressure of about 52kpsi, so it should work with reduced loads comparable to the .500S&W.

Tim

http://stevespages.com/page8d.htm
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Offline bajabill

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Re: 45x2 on nef
« Reply #9 on: February 18, 2009, 05:48:37 AM »
in regard to the WSM comparison, I feel the necked cartridges put more load on the lug.  The forward component of pressure on the shoulder adds to the frictional load on the barrel which must be reacted by the lug.  These and the load applied to the bullet all combine and are reacted by rearward load on the frame.

This is why I think there are more case stretching issues with the heavily necked chamberings,  243 and 25-06.
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Offline pondenck

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Re: 45x2 on nef
« Reply #10 on: February 25, 2009, 10:06:39 AM »
Thanks for input.iwill not try it.will work on maybe 45/110 thanks Jim
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