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New 338 Edge will not fire. What now?

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Unread 10-17-2009, 01:12 PM
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Join Date: May 2007
Location: California
Posts: 458
Re: New 338 Edge will not fire. What now?

OTOH, what you've just described is a standard wildcat case fire-forming technique.

You could call your new wildcat the .338 Edge Magnum...or more appropriately, the .338 O.S. (oh ****!).
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Unread 10-17-2009, 05:48 PM
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Join Date: Jun 2004
Location: Texas
Posts: 1,075
Re: New 338 Edge will not fire. What now?

I have been going over and over this post and Lewis H brings up a possibility. All of my boomers have belted cases and I haven't fireformed a shouilder headspaced cartridge in years. If you are fireforming from .338 Rum cases the difference in the datum line to base dimension might be accountable for the rounds going too deep into the Edge chamber. I'm not familiar with either round except that I know they headspace on the shoulder. I don't know how to fireform this case correctly, but if that's the problem, I don't think seating the bullet to engrave the rifling in order to hold the cartridge against the bolt face is the answer.

I hope it turns out that the headspace is correct for the Edge, and it is just a matter of finding out how to safely fireform these cases to the longer chamber! If that is the problem, I still think the 'smith should have test fired the rifle and took about a minute to be tell you how he held it against the bolt face for safe firing.

There are a lot of Edge shooters on this site that know how it's done.

If there are Edge cases and you're using them, you just have a really bad chamber.

Let us know how it comes out, Tom
Texas State Rifle Association Life Member
NRA Endowment Life Member

A big fast bullet will beat a little fast bullet every time

Last edited by specweldtom; 10-17-2009 at 05:54 PM. Reason: spelling
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Unread 10-17-2009, 06:02 PM
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Join Date: Apr 2004
Location: North Idaho
Posts: 71
Re: New 338 Edge will not fire. What now?

IMO the Edge is not worth the hassle. The 338 Ultra has plenty of energy and in a pinch you can shoot factory ammo. Like when you are 1100 miles from home and find that your ammo is still sitting on the bench. Ca ca happens.
Probably he best way to fire form the brass would be to expand the neck to something like .345-.355 inside diameter. Then, neck size just enough of the neck to make the case snug in the chamber.
That is how a lot of folks make the 6 Dashers from 6 BR brass and probably BRX cases, too.

My choice would be to simply take enough off of the shoulder and face of the barrel to make the rifle a plain vanilla 338 Ultramag and forget the whole Edge idea.
I'd sure like to know what the 'smith used for headspace gage(s).
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Unread 10-17-2009, 06:15 PM
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Join Date: Dec 2001
Location: Long Island, New York
Posts: 2,499
Re: New 338 Edge will not fire. What now?

Is it possible that a 338 RUM factory case/round was chambered in the 338 EDGE chambered rifle? Could this have caused the excessive headspace?

Someone must have tried this before. What do you think?
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Unread 10-17-2009, 06:23 PM
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Join Date: Nov 2003
Location: Washington State
Posts: 2,726
Re: New 338 Edge will not fire. What now?

The EDGE is just a 300RUM case necked up to .338. That's it. Very simple and very powerful and quite a few here think it is worth the minimal effort to work with this chambering as it is more powerful than the .338 RUM.

If the OP was mistakenly using 338 RUM brass, this could be the cause of the issue noted as 338 RUM brass is quite a bit shorter---by about .080, if I recall correctly.

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Last edited by jmden; 10-17-2009 at 06:32 PM.
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Unread 10-18-2009, 12:26 AM
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Join Date: Nov 2008
Posts: 1,087
Re: New 338 Edge will not fire. What now?

OK, This is a photo of two edge cases for comparison. The one on the left is unfired and the one on the right is the case that I managed to get to fire in my new rifle. Both cases were made from Remington 300 RUM brass.

As you can see the fired case has had the shoulder pushed a considerable way forward. There must be a lot of slop in the chamber. about 0.080" as I measure it. I won't be attempting to fire this rifle again until the gun smith has fixed it in two days time.

I think when he installed the oversize recoil lug, he forgot to take the extra thickness into account? Maybe? Who knows?

Unfortunately he lives 7 hours drive away, so I have to drive up to his place, wait for him to fix it then drive 7 hours home again.

Anyone want to test fire it for me??????? I now have a bad flinch.

scientia est potentia

Last edited by Topshot; 10-18-2009 at 12:50 AM. Reason: updated photo
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Unread 10-18-2009, 08:36 AM
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Join Date: Dec 2001
Location: Long Island, New York
Posts: 2,499
Re: New 338 Edge will not fire. What now?

Why would you drive the rifle there - just ship it. I just shipped a rifle out the other day, USPS. It cost about $15 with Delivery Confirmation. Insurance is extra if you want it.

Seven hours each way - no way!
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