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.338 rum vs .338 edge

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Unread 12-24-2007, 11:41 PM
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Join Date: Jan 2005
Location: Pocahontas, AR
Posts: 1,034
Originally Posted by Lost creek View Post
I talked to a tech guy at nosler bullets the other day about the b.c. of the 250gr accubond,he told me it is .575. IF I am correct about the velocity loss of 175-200fps.going from the 225gr.accubond at.550 the 250gr. accubond at .575b.c.,accordingto my ballistic program the 250 is a step backwards in drop,wind drift and energy.

Looks like you might be right.
You will not make peace with the Blue Coats, you are free to go.
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Unread 12-25-2007, 02:02 AM
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Join Date: Jun 2007
Posts: 16
wow, thanks for the info guy's, I'm currently looking at buying the remington 700 338rum or having a 338 edge built. Right now I'm just learning with my 308 savage and 22-250m77 but I'd like to get a bigger rifle soon. this site is great and I'm learning a ton.
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Unread 12-26-2007, 10:49 AM
Join Date: Jun 2007
Location: North Idaho
Posts: 1,877

Your formula is close to what I have seen as long as the increased capacity is used with the same powder. Sometimes a small increase will allow use of a different powder.

Update on my project - we just shot some loads in the high 2900's (two rounds went 3007 & 3003 fps). These round shad slight ejector marks, a bit more pressure than I want to run, but the bolt lift was not sticky or different to feel in any way. We shot a group in the 2970's and no ejector marks what so ever. This mod is also going to allow us to use a couple different powders no able to use before. I am testing these for ES and temp sensitivity. If they pass those tests I expect to pick up another 20-30 fps in that switch. 2950-2980 FPS should be the norm if all works well. Still alot of testing to do before I will consider it a successful project. Keeping my fingers crossed.
Shawn Carlock
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Unread 01-09-2008, 07:14 PM
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Join Date: Jan 2008
Posts: 41
Originally Posted by Nomosendero View Post
Looks like you might be right.

Agreed, I just spoke with Nosler today regarding the same issue, but forgot to get the bullet length. I wanted to confirm the BC as .575.

I spoke with Shawn Carlock on the phone a few weeks ago, he was very helpful in answering my questions, if i weren't doing this myself he'd build my .338 Edge.

Anyhow case capacity was brought up referencing quickload, and I figured I'd share my recent unfired measurement using remington brass. Filling the case LEVEL with a new CCI 250LRM primer pressed all the way in netted me 115.2 grains water capacity. Using the overflow method I got 116.0.

The argument between the .338 rum and .338 edge seems to be settled, someone else out there is making the equivalent of a .338 Edge with .338 RUM width dimensions (fire form required). That to me seems like a better argument in regards to a negligible gain. Thanks for the insight!
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Unread 05-25-2008, 06:23 PM
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Join Date: Feb 2008
Posts: 121
A fast barrel can bring on more velocity than

the extra 6 grains of powder. The questions is, which one is the fast barrel?

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