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Old 09-13-2017, 03:47 PM   #1
Walding1989
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Default Maybe a 155 grain 6.5 Berger?

got this off the long range website. looks like berger may be coming out with a 155 for all the 6.5 guys. http://www.longrangehunting.com/thre...hunter.190703/
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Old 09-13-2017, 11:50 PM   #2
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Seen a few people test it. Looks promising but youll have to run a hell of a freebore which will severly limit you running lighter bullets if you ever wanted to. Load these in a 6.5 saum or 264 wm and hammer down!!
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Old 09-14-2017, 06:01 AM   #3
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Seen a few people test it. Looks promising but youll have to run a hell of a freebore which will severly limit you running lighter bullets if you ever wanted to. Load these in a 6.5 saum or 264 wm and hammer down!!


If true these will be going in my .264 Win Mag with a stout load of Retumbo.


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Old 09-14-2017, 06:57 AM   #4
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What kind of twist will be able to stabilize that? 1:6?
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Old 09-14-2017, 07:19 AM   #5
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Imagine the 6.5-300 guys are licking their chops!
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Old 09-14-2017, 07:19 AM   #6
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Is the bc improved. If not it's kinda pointless. No?
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Old 09-14-2017, 07:39 AM   #7
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Is the bc improved. If not it's kinda pointless. No?
The BC will be improved. Not pointless at all with the heavy weight and the larger 6.5 calibers. It will be a major improvement.
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Old 09-14-2017, 07:39 AM   #8
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What kind of twist will be able to stabilize that? 1:6?
I'd guess a 1:8 would be fine.
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Old 09-14-2017, 07:51 AM   #9
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I would love it if they made a 120gr for the grendel.
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Old 09-14-2017, 09:06 AM   #10
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Hornandy makes a 120gr GMX and a 123gr in SST

Last edited by 0007; 09-14-2017 at 09:07 AM.. Reason: br to gr
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Old 09-14-2017, 09:27 AM   #11
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I was reading a 1:7.5 is needed at 3000 fps to stabilize


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Old 09-14-2017, 09:32 AM   #12
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I was reading a 1:7.5 is needed at 3000 fps to stabilize


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Not sure why. The matrix 160gr calls for 1:8
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Old 09-14-2017, 09:43 AM   #13
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The longer the bullet the faster the twist is needed to stabilize the bullet. Berger twist rate calculator is handy for knowing what is needed to stabilize your bullet. They have a list of their current bullets to select from or you can add in your own info.

http://www.bergerbullets.com/twist-rate-calculator/
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Old 09-14-2017, 12:08 PM   #14
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Hornandy makes a 120gr GMX and a 123gr in SST
With those options I will just stay with 120 NBTs
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Old 09-14-2017, 04:06 PM   #15
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Quote:
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I would love it if they made a 120gr for the grendel.


The berger 130gr offerings work quite well in the Grendel loaded with CFE223 or Leverevolution powder, as does the 129gr Nosler accubond longrange. That is actually a Grendel in my avatar photo. Accuracy wise it loves both the bullets pushed by CFE223 as does my AR

Last edited by kmon; 09-14-2017 at 04:09 PM..
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Old 09-14-2017, 06:27 PM   #16
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I'm thinking about building a 6.5saum now. If I do, I'm serious thinking about building it to shoot these.


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Old 09-14-2017, 06:57 PM   #17
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Quote:
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The berger 130gr offerings work quite well in the Grendel loaded with CFE223 or Leverevolution powder, as does the 129gr Nosler accubond longrange. That is actually a Grendel in my avatar photo. Accuracy wise it loves both the bullets pushed by CFE223 as does my AR


Yep being limited to mag length kinda sucks.

I have some 129ABLRs loaded for my Grendel as well as some of the 135 Classic Hunters.

I suspect the ABLR is going to be a winner given the lower velocity expansion threshold.

I'll try the 155 Bergers in my 6.5-284. Be interested to see where the BC falls out at.


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Old 09-14-2017, 07:11 PM   #18
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Quote:
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I'm thinking about building a 6.5saum now. If I do, I'm serious thinking about building it to shoot these.


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Why not build a 264 Win Mag? I know, and agree the SAUM is a very efficient round but brass ain't easy to come by. You can neck 7 Mag brass down all day with one pass to get brass for the 264 Win mag. With a 26" barrel I'm running 140 grain bergers at 3230fps with .247 groups. Pretty hard to beat in my opinion. Just imagine what 155 grains is gunna do!
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Old 09-14-2017, 07:31 PM   #19
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Originally Posted by Walding1989 View Post
Why not build a 264 Win Mag? I know, and agree the SAUM is a very efficient round but brass ain't easy to come by. You can neck 7 Mag brass down all day with one pass to get brass for the 264 Win mag. With a 26" barrel I'm running 140 grain bergers at 3230fps with .247 groups. Pretty hard to beat in my opinion. Just imagine what 155 grains is gunna do!
Barrel life. However, I'd be curious to see how a 264 with a bore rider throats would do vs the saum
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Old 09-14-2017, 07:32 PM   #20
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Barrel life. However, I'd be curious to see how a 264 with a bore rider throats would do vs the saum
Barrels are like tires
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Old 09-14-2017, 07:39 PM   #21
trophy8
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Barrels are like tires
Except proof barrels haha
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Old 09-14-2017, 07:40 PM   #22
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Except proof barrels haha
Now we're talkin haha
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Old 09-14-2017, 07:48 PM   #23
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Barrel life. However, I'd be curious to see how a 264 with a bore rider throats would do vs the saum
The barrel that was chambered in 264 win mag bore rider would shoot out faster. The cartridge is already hard on barrels and removing even more metal from the barrel will shorten its life even more. Many people are experiencing significantly shortened barrel life's when chambered with a bore rider reamer.
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Old 09-14-2017, 07:58 PM   #24
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Makes it difficult to chase the lands as the bore erodes, if it starts long anyway. But I have seen many Weatherby rifles shoot great with 1/4 inch or so free bore.

They make barrels while we sleep
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Old 09-14-2017, 08:10 PM   #25
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It will be interesting to see the specs on this. I shoot a .260, so won't be able to maximize the performance of this bullet by a long shot. Might be an excuse to buy the 6.5x284 or 6.5 SAUM!
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Old 09-14-2017, 08:37 PM   #26
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The barrel that was chambered in 264 win mag bore rider would shoot out faster. The cartridge is already hard on barrels and removing even more metal from the barrel will shorten its life even more. Many people are experiencing significantly shortened barrel life's when chambered with a bore rider reamer.
False. The designs creates lower chamber pressure. Reducing fire cracking and throat errosion. If someone had it otherwise then they didn't do it right.
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Old 09-14-2017, 08:38 PM   #27
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Originally Posted by Horitexan View Post
I'm thinking about building a 6.5saum now. If I do, I'm serious thinking about building it to shoot these.


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Heck I'm building my to be optimized for 140s on the heavy end. This makes a 26 nosler look pretty awesome though. It's hard with saum to beat 130s unless you're going past 1000
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Old 09-14-2017, 10:13 PM   #28
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Heck I'm building my to be optimized for 140s on the heavy end. This makes a 26 nosler look pretty awesome though. It's hard with saum to beat 130s unless you're going past 1000

What FB are you going with?
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Old 09-14-2017, 10:30 PM   #29
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False. The designs creates lower chamber pressure. Reducing fire cracking and throat errosion. If someone had it otherwise then they didn't do it right.
I don't disagree with you that chamber pressures will be less with identical loads. But to make the blanket statement that what I said was false, is well, false.

Not saying this is the case with you, but it seems many love this chambering because they can get extra velocity before hitting max pressure. With that being said, they still like getting to that edge of max pressure that would be experienced in a saami chamber while obtaining the higher velocity afforded by the bore rider reamer. I believe this is why people are reporting that they are shooting out their bore rider chambered barrels faster than a conventionally chambered barrel.

If the two chambers are run at identical pressure, the barrel that does not have the step will last longer. If a taper is cut into the rifling and run at an identical pressure there is no way that the throat will hold up as well as the conventional clambering without the lengthened taper. It would defy physics if the tapered throat held up as well as a not tapered throat at identical pressures.

Another point of consideration is even if you run a lower chamber pressure in a bore rider clambering there is less metal in the throat to erode.... so you may have less pressure and less "true throat erosion" but you are starting off with significantly less metal from the time the rifle is chambered which means the tapered area will become freebore without as much true erosion. Real world testing provides the answer if that occurs first in a bore rider clambering or a saami clambering.

I look forward to hearing how your gun performs in the long run and how the barrel holds up.
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Old 09-14-2017, 10:34 PM   #30
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It's been shown on over a dozen rifles at least from mine and folks I know. They have lasted a lot longer. 28 nosler shooting the same as new with 900 rounds on it was reported from a friend of mine.
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Old 09-14-2017, 10:38 PM   #31
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Are they running them at the same chamber pressures?
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Old 09-15-2017, 06:49 AM   #32
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What FB are you going with?
.081

Was gonna go with the .120 but was convinced by the buildedr to run the .081 since I won't be running the eld or longer heavy bullets. My load will be with the 135gr jlk
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Old 09-15-2017, 08:05 AM   #33
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Are they running them at the same chamber pressures?
Yes. Pretty well maxed out.
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