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338 edge?

 
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  #15  
Old 09-30-2010, 10:34 AM
436 436 is offline
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Re: 338 edge?

sniper2,
So what's being said here is; the .338 Remington Ultra Magnum cartridge, designed by Remington in 2000 an introduced by Remington Arms in 2002 is nothing more than a .338 Edge with a 30' inch barrel added to the action as introduced by S.C in 2001, correct?

So here's the defining question... Can you fire both cartridges in the same rifles safely?

I think; we can all agree that the .404 Jeffery cartridge as seen more then it far share of wildcatting on it since it's introduction in 1909'..., and I'm pretty sure the first unknown name soul to top it off with a .338 caliber bullet is lost to history at this stage.

Thanks...
436
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  #16  
Old 09-30-2010, 06:22 PM
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Re: 338 edge?

I believe the .338RUM is shorter is was initially thought it would be the same but when they introduced it the thing was shorter probably to protect some folks... I surely wouldn't interchange these cartridges...
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  #17  
Old 09-30-2010, 07:53 PM
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Re: 338 edge?

The 338 RUM is .090" shorter than the 300 RUM case
I own both, bought a 300 RUM Last month
Took the 300 RUM out the last two times shooting
Can shoot one shot touching the other at 100 yds haven't been farther yet
Same for the 338 RUM
I think the 300 kicks more than the 338 RUM!!
300 RUM 90 grains H1000 200gn bullet
338 RUM 98 grains Retumbo 225 SST bullet
Still playing with loads going to try Retumbo with the 300 RUM
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  #18  
Old 09-30-2010, 07:56 PM
436 436 is offline
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Re: 338 edge?

sniper2,
Ok'..., far enough. So who’s wildcat’…., like the .338/300 RUM is the .338 Edge close to? Or is identical too? I would think performance wise there's ain't a dimes worth of deference in any of these cartridges with a 30" inch barrel; is that right?
However is there some secret "voodoo" in this cartridge, or any of the others, other then their names?
Perhaps you have the correct case dimensions for the .338 Edge, that and the dimension of the closest .338 wildcat to the Edge.
It seems there are few people on the site that could shed light on the conversation, and I'd kinda like to know what other options are people trying with a 30" inch barrel.
Again, thanks for your excellent information in this conversation.
436

ps; I am thinking very hard about the .338 Norma Mag, I understand a lot of LR shooters are having some very good luck with it. And it's picking up speed like crazy in the long range hunter camps.

Last edited by 436; 10-01-2010 at 12:15 PM.
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  #19  
Old 10-02-2010, 09:22 AM
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Re: 338 edge?

I don't want there to be any confusion about this. I developed the 338-300 RUM in 2000-2001. I never claimed to be the first to neck a 300 RUM case up to 338. I named the cartridge 338 Edge because I had caught some rumblings that Remington was going to introduce a 338 RUM but the case was to be a little shorter and I wanted to avoid any confusion about what could be chambered in the chambering. If you can get a 338 RUM to fire in an Edge chamber the results are nasty. It has been my experience that the Edge will best the 338 RUM by 75-100 fps in 30" barrels. In shorter barrels and especially lighter bullets the difference in very little. The simple fact is that I had wanted something very easy to load for (no fire forming) with good performance using heavy VLD bullets , specifically at the time the 300 gr SMK. To that end I accomplished what I had wanted and began recommending it to customers, writing articles, shooting hunting videos, renting them in LRH classes etc. It is alot of this work in hunting / tactical platforms and recommendation that I will take credit for. If the 338 Edge's current popularity was from someone elses work, most people would be calling it a 338-300 or any of several other names I have seen it called. Reality is this if you are launching a 300 gr SMK @ 2800+ you will be happy with your rifle as a long range hunter, chambering is and always will be a debated issue. I know what I like and what works for me. I hope this helps in your quest for a 338 LR hunting rifle.
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  #20  
Old 10-02-2010, 01:38 PM
436 436 is offline
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Re: 338 edge?

Shawn,
Thanks for dropping by in this conversation, along with setting the record straight on your development of the .338 Edge. I do have a few questions maybe you could help with.

From what I can understand, Remington's cartridge ".338 RUM" is 2.850" inches in length, with a case capacity of 113grs of H2o... an with a advertised velocity of (2800 fps) Maximum pressure 65,000 psi

Your design'..., the ".338 Edge" is 2.850" inches in length, with a case capacity of 110.2grs of H2o pressure unknown, but I would guess it's not over 65,000 psi?

It's also been stated {I’m not necessarily saying by you} that 338 Edge is similar in ballistics to the .338 Lapua Magnum, which has a case capacity of 114grs of H2o and a maximum pressure 60,916 psi????

So with a small amount of information out there on the aforementioned, I'm sure you can see how it would be confusing to the layman... Maybe as a neophyte on the subject you could help out.

I was thinking that when pushing a 300gr bullet in all these case; one over the other, it would be pretty hard to pick up a consistent 50 fps to 100 fps over the other; in any barrel length or bullet weight.... This is what makes the discussion some what cloudy... In any other cartridge, picking up 50 fps to 100 fps is not a game changer... with that said; doing it takes more powder normally, or at the very least a much better case design. The 50 fps to 100 fps velocity can be nothing more than, free bore or temperature change from day to day when tested over a chronograph, from what I understand. I'm sure you know that just setting ammo in the hot sun for a few minutes will give you that and then some. So put that aside; where is the big gain in the .338 Edge over the others with only 110.2grs of powder? What’s in the case design I’m missing?


I've read a few of your very fine articles; on testing and hunting with the .338 Edge..... Perhaps'.., my case capacity is wrong on the Edge....?
Have you ever strain gauged the pressure on your cartridge and establish a maximum psi pressure that you could share with us?

I'm not talking here about who claimed what or who said; “what” I have a genuine interest in the caliber and cartridges, and I'm sure many others here would find it enjoyable to read as well.

Thanks again for the history up date on the .338 Edge and how you came about designing it.

436

Last edited by 436; 10-02-2010 at 07:20 PM.
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  #21  
Old 10-02-2010, 06:41 PM
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Re: 338 edge?

I looked back throught my 338 Edge notes from 2001, April. I water weighed ( not took what a program suggested they had ) the following:

338 Edge 117.4 gr
338 Lapua 113.3 gr
338 Ultra 110.4 gr
340 WBY 101.0 gr
338 Win Mag 84.1 gr

Of H2O.

Also as a side note the case length of the 338 Edge is 2.820" (trim length) and the 338 RUM is 2.760". The 338 RUM also has a longer neck and effectivly has a case body length about .090" shorter then the Edge. This gives a 7-7.5 gr advantage to the Edge. The problem with advertised velocities is that we use H1000 and run about 2800-2850 from a 30" barrel. The Edge is easly capable of another 100+ fps by simply changing powder. However these powders are temperature sensitive, lack the tight ES or other issues. I would much rather give up a 100 fps to have ES in the single digits and have the same velocity (within 20 fps) form 20 to 100 degrees ( yes we tested it ). So what it really comes down to is that I like the combo we are using and believe it to be much better than the others as a whole package. Then we started into developing various rifle paltforms around the 338 Edge and are still in developement of a couple of very advanced platforms. Hope this clears up the case capacity issues. If you have any other Q's lets here them.
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