338 Rum Ulta Mag vs 338 Edg Rifle

rhlee46

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Aug 21, 2011
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I want to buy my next rifle. I thinking about a 338 Rem Ultra Mag. I want to know what is the increased performance of the 338 Edge for the additional dollars or can the Rum be converted?

Thanks for the information.
 
Re: 338 Rum Ulta Mag vs 338 Edg Rifle

The only difference in money would be the extra powder of the 338 edge. I would do the edge, you can form easily from 300RUM brass and nosler brass is available. I am not totally sure of the performance difference but if I remember correctly it is around 100fps more for the edge. Do some searching on this site, I know the topic has been covered a few times in the past. Hope this helped.

JWV
 
Re: 338 Rum Ulta Mag vs 338 Edg Rifle

First I would consider what use your new build will be subjected too. If you just want a solid rifle for hunting and some long range shooting you might want to stay with the rum. but if you have the money and and are looking for some serious long range hardware then go for the edge or even a lapua or similar. You will gain the aforementioned velocity but you price per shot, even with handloads, goes up quickly. It really boils down to what you want and what you can afford.
 
Re: 338 Rum Ulta Mag vs 338 Edg Rifle

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Badshot308</div><div class="ubbcode-body">Here's their website http://www.defensiveedge.net/338%20edge/338%20edge.htm</div></div>

Great link! OP, the reality is, nowadays there are just so many options out there. You need to really think about what you want to accomplish and then decide which 338 will fit the bill.

So what exactly do you plan on using this rifle for?
 
Re: 338 Rum Ulta Mag vs 338 Edg Rifle

26" BBL, build a RUM or Lapua, performance is the same.

30" BBL, build a EDGE to make use of the extra case capacity. 100 - 150 FPS average increase in velocity over the RUM or LM
 
Re: 338 Rum Ulta Mag vs 338 Edg Rifle

Ace, not to rain on your parade but there is no way the edge has that much advantage over the lapua, plain and simple. Barrel length being equal in all testing shows it maybe equal with some loads. I understand that it's a great step up from the standard ultra, don't make it something it isn't. You want those velocity improvements go with the lapua improved, or start talking about the allens, or the weatherbys etc etc....... rhlee, again figure out what you are really going to use it for then research each cartridge and you will find what you are looking for. I have to admit that we all have our little pet cartridges and sometimes that gets in the way of the bigger picture for other shooters.
 
Re: 338 Rum Ulta Mag vs 338 Edg Rifle

bowstryder,

why would the edge cost so much more to load for than the rum? why do you find it hard to believe the edge will outrun the lapua if it has more powder capacity? also, the lapua is designed to run at 69k psi and the edge or rum at 64k psi. i have chronoed the edge at 3024fps in a 27" barrel with a 300mk with a new lot of h1000. i should have started low because there is not telling what the pressure may have been! the bolt lift was definitely sticky.

chuck
 
Re: 338 Rum Ulta Mag vs 338 Edg Rifle

Chuck, I was not trying to imply that the edge is so much more difficult to work with than the rum. In fact just rechamber a barrel and you are good to go with fireformed brass. It's quite easy in fact. However, with remington brass you are looking at less velocities because of the inability to hold pressures like the lapua brass. And the edge rarely outruns the lapua, bottom line. Everyone claims soooo much more capacity, .338 edge has an H2O of 110.4 grs, .338 Lapua 114grs. The only thing to do with either to get the velocities are long throated chambers and forget about mag feeding. My lapua magazine will accept up to 3.755" the longest I have seen an edge and this is straight from the originator was 3.8" okay now tell me where this round is "far superior" to a lapua. I am not advocating that rhlee should get a lapua, the point I was trying to make was how much time and money, and the objective of said rifle should dictate what he chooses. The lapua seems to be chambered in $5 bills, but if I can get 10 reloads (which is a very low count from what most are getting with moderate pressures) I will be able to load at just a shade of over a dollar a round. But until that point, it's plain expensive. The edge would not be as much.
Again, I am not on a rant. Just quoting facts. And I am definitely not saying he should buy a lapua, it wasn't a consideration in the question. But making ill comparisons to it are not what folks need.
 
Re: 338 Rum Ulta Mag vs 338 Edg Rifle

I will go one step further and say this, the .338 edge is what got me interested in elr with medium bore rifles. It's a fantastic round, period. I just happened to go the lapua route. Oh, and chuck, not to step on your toes but I have personally seen a 26" barreled lapua go 3000 fps with a 300gr pill. It was obviously a hot load and not what I suggest repeating, and it was in a "factory" remington 700p mlr. So they go hand in hand, it all comes down to choice I guess.
My apologies if I was misleading or seemingly disgruntled. I am not.
 
Re: 338 Rum Ulta Mag vs 338 Edg Rifle

Thank you everyone for the education. I cannot burn $5 bills. I'll be shooting elk. The 338 RUM Ultra Mag is more than enough.
 
Re: 338 Rum Ulta Mag vs 338 Edg Rifle

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: bowstryder</div><div class="ubbcode-body">Ace, not to rain on your parade but there is no way the edge has that much advantage over the lapua, plain and simple. Barrel length being equal in all testing shows it maybe equal with some loads. I understand that it's a great step up from the standard ultra, don't make it something it isn't. You want those velocity improvements go with the lapua improved, or start talking about the allens, or the weatherbys etc etc....... rhlee, again figure out what you are really going to use it for then research each cartridge and you will find what you are looking for. I have to admit that we all have our little pet cartridges and sometimes that gets in the way of the bigger picture for other shooters.</div></div>

Reading Comprehension will help when looking at my posts. With Same Length barrels, the EDGE will still have an advantage, albeit a small one. If you read what I wrote, you would see that the EDGE needs the 30" BbL to take advantage of the extra case capacity. Not sure I can say that any simpler.

I Understand you are Emotionally attached to your LM and want to think you made the best decision... but you can't ignore Facts to do it. Across the board the EDGES I have built are 100 - 150 FPS Faster than a RUM or LM... the latter 2 almost always being Equal. This is not just on Paper, or at Short Ranges. We shoot from 1000 yards to a Mile + Frequently.
 
Re: 338 Rum Ulta Mag vs 338 Edg Rifle

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: 3fingervic</div><div class="ubbcode-body">For shooting Elk, I think that a .300 RUM would be more than enough cartridge. Unless you have your heart set on a .338, then go for it. </div></div>

Edge/Lapua argument aside. As mentioned, a 300RUM is more than enough gun for elk, so is a 300wm, even the .308 is plenty for elk, if the cost is an issue pick the one that best keeps the lights on for another week. I wouldn't build a 300RUM for the expense and barrel life alone, not when a 300wm will do the job just as good, but that's me.
 
Re: 338 Rum Ulta Mag vs 338 Edg Rifle

i have to admit that i have never fired a lapua mag, but i have built a couple of EDGE chambered rifles and the EDGE continues to impress me. i remember the first time we shot the first EDGE i built at 1050yds. IT SEEMED LIKE CHEATING. i had along a VERY accurate 308 on a surgeon receiver and an impressive 6.5 SLR. the edge was less than half the wind of the 308 and hit with such authority that it actually stretched the bolts holding my target mount to the target. the lapua is quite good i am sure but the EDGE will do as good or better and do it on a tighter budget.

chuck