.338 rum vs .338 edge
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AJ Peacock
Well-Known Member
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davewilson
Well-Known Member
i'm gonna disagree with 150-200 fps difference between these 2 rounds. i'd say it's more like 50-70 extra with the edge. holds about 6 gr of powder more.
AJ Peacock
Well-Known Member
Thats about right. According to Quickload it is just about a 6gr difference (about 7-8% improvement, which is a little more than a 338RUM AI from my understanding) . Quickload estimates between 150 and 200fps difference with the 250gr and 300gr bullets for the same pressures in a 28" barrel. I did a quick search here and saw quoted 100+fps difference in a couple threads. If it's only 50-75fps then there is no explaining the number of people choosing it over the 338RUM and the number of barrel makers that have reamers and supply barrels in the 338-300chambering.
I don't have any direct experience with the Edge and was only going on the estimates from Quickload.
AJ
I don't have any direct experience with the Edge and was only going on the estimates from Quickload.
AJ
davewilson
Well-Known Member
i have one. it will shoot a 300 at 2800 if i push it, which i don't like to do. i have a rock, 5r, 29" barrel. Roy has a 338rum that shoots a 300 gr well up in the 2700's with a factory 26" tube.the difference between the 2 is not as much as most think. it will take a lot more than 6 gr of powder to make 150fps difference.
AJ Peacock
Well-Known Member
OK, I believe you. I've only played with a 338RUM. I'll have an Edge to play with this spring. I'll delete my post above.
BTW: Shawn has stated that his 30" will push the 300SMK to 2900fps.
Merry Christmas,
AJ
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Long Time Long Ranger
Well-Known Member
I have built a bunch of 338-300 ultramags and have not seen one that will get 2900 fps out of the 300 matchking without ruining the brass. Doesn't mean it can't happen, just don't get one expecting that velocity because that would be above average. I have a 300 wby with a 26" barrel that shoots the 180's at 3430 fps and the 200's at 3250 fps. Those are the accuracy loads. Straight 300 wby. I have a 257 STW and a 338-378 that are also way outside the scale. Sometimes you just hit a barrel that just goes crazy I guess.
AJ Peacock
Well-Known Member
Long Time Ranger,
That was the top end that I quoted. What velocities do you see with different barrel lengths as your 'top'? After all brass is cheap.
AJ
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AJ Peacock
Well-Known Member
A 30 year old man near here, blew part off his face of this year when the bolt blew out and hit him in the face.. If you are ruining brass then you are exceeding the safety factor....
I believe that Shawn stated 2800 FPS with the 300 SMK in the 338 Edge not 2900 FPS.....
I believe that Shawn stated 2800 FPS with the 300 SMK in the 338 Edge not 2900 FPS.....
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davewilson
Well-Known Member
the quote of 2900 is correct, i didn't mean to imply that 2900 wasn't reachable, but i agree as someone else stated, it's much more rare than regular and i'm sure as someone else said. the brass will probably be taking a beating at that velocity.the flip side to this is some barrels probably struggle to get 2800. with respect to how much faster is it than a 338rum, i'll bump my original statement up a couple and say 50-100 fps. that's probably the "norm"
AJ Peacock
Well-Known Member
Read it for yourself. And how hard is Roy pushing his 338RUM to get 2700fps with an SMK in a factory 26" barrel?
http://www.longrangehunting.com/forums/f17/338-edge-how-much-better-22581/
For the 'same pressures', I'd still be surprised if the Edge didn't have 150fps on the RUM.
AJ
Shawn Carlock
Sponsor
The Edge with a 30" tube you can just get 2900 fps but the powder you have to use is temp sensitive and the ES was to big, but it will do 2900 fps with standard pressure if numbers is all your worried about. The powder I use as most know is H1000 and it settles in right at 2800-2830 fps in most 30" barreled rifles. I'd gladly give up 75-100 fps for the excellent consistancy. I have developed and am applying for a patent on a chambering technique / design that makes reaching 2900-2950 with the Edge and good stable powders a normal occurance within standard pressure . Stay tuned on that one! As far ad the 338 RUM vs. EDGE debate I will say that the Edge is an advantage worth doing with the 300 gr bullet in any length barrel and an advantage with lighter bullets in the 30" tube. If you were going to build one with a 26" tube and shoot 225 NAB's there is not enough advantage in the Edge, you might as well chamber in the RUM.
