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New 155gr 6.5mm Berger on the horizon?

284winner said:
Well moving on. My curiosity is piqued with the 155 but like Fredo says not suuuper excited about it for my 6.5-284. I do own a 264 win mag but in the sporter barreled model and so so accuracy. I'd have to see other 264 mags shoot this bullet before running out to rebarrel it. Yes I think it would do well but how much better than the 6.5-284, who knows. Just another bullet on the horizon.
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I have a 6.506AI w/28in tube and a 6.5-284 w/26 and I'm at a very similar place as you, I'm curious, but IMO not sure either of my 6.5's has the case capacity to make these new 155's outperform the 140's. I think a 7mm Blaser Mag necked down to 6.5 could make for a very nice 6.5 to shoot these 155's though.

I know someone that is testing the new Berger 155's and I asked him to measure the bearing surface and compare them to the bearing surface of the 140's and these new 155's don't really have much longer bearing surface than the 140's. With regard to velocity, I'd imagine this is a good thing and something I think the 195's, compared to the 180's, maybe suffered from.
 
B23 said:
I have a 6.506AI w/28in tube and a 6.5-284 w/26 and I'm at a very similar place as you, I'm curious, but IMO not sure either of my 6.5's has the case capacity to make these new 155's outperform the 140's. I think a 7mm Blaser Mag necked down to 6.5 could make for a very nice 6.5 to shoot these 155's though.

I know someone that is testing the new Berger 155's and I asked him to measure the bearing surface and compare them to the bearing surface of the 140's and these new 155's don't really have much longer bearing surface than the 140's. With regard to velocity, I'd imagine this is a good thing and something I think the 195's, compared to the 180's, maybe suffered from.
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Well time will tell. As I said with RL,17, maybe heavy for caliber in that short fat 284 case will help out using that powder. Had a member say it burns up barrels. All my barrels are expendable. They all go eventually. Same member said RL26 is the go to powder possibly for the heavier bullet. As I said, someone will publish some good load data once it arrives on the market.
 
284winner said:
Same member said RL26 is the go to powder possibly for the heavier bullet. As I said, someone will publish some good load data once it arrives on the market.
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RL 26 has been on the market for almost 2 yrs. As with all things Alliant, data will not come from them. 26 IMO is one of the most controversial powders on the market, you have the cult following, and then guys with stories, sort through the BS if it is in your future.
 
Milo 2.0 said:
RL 26 has been on the market for almost 2 yrs. As with all things Alliant, data will not come from them. 26 IMO is one of the most controversial powders on the market, you have the cult following, and then guys with stories, sort through the BS if it is in your future.
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Never tried it. I will follow those on here that have good success with whatever they use if loading those 155s in the 6.5-285. I'm skeptical about a future with 155s and the 284 case.
 
Seams like this bullet is the perfect candidate for a 6.5-284. The normal 140 make cambering it in a short action just a little to tight and a little to much space in a long action. With the extra .080 of bullet sticking out it should be perfect for a 6.5-284 provided it has been throat-ed for it. Also the 140 in the 6.5-284 seam to always leave to much empty space in the case. This may fill it up. That is just my thinking. We will see what it actually does on the firing line. That is what counts.
 
muleystalker said:
Hey Fredo, its been a while hope all is well, what I was saying is the 195's didn't show an advantage to the F-Class crowd over the 180 in a mid sized cartridge, say the .284. But what I was saying is the 195 wasn't designed for mid sized round as a target bullet, it was designed as a hunting bullet for larger capacity magnums at which it does excel over a 180. For its intended purpose it beats out the 180's in both drop, wind drift and more down range energy. It was intended for Long range hunting, And weather someone agree's that LRH is ethical or not its here to stay. Lots of archery hunters think hunting with any kind of fire arm is not sporting, or fly fisherman don't think fishing with bait is sporting, that doesn't make it true. I have run the numbers on a lot of magnums cartridges especially the 28 nosler and in most the 195 does beat out the 180's, but it has to be a cartridge with a sufficient powder charge to push it. Thats why the the BR guys as you stated, are not using it, they are not using a big enough cartridge to take advantage of it, it doesn't fit into there need and wasn't designed for it. The 195's paired with the 28 Nosler is a hammer for hunting, its a joy to shoot and even nicer to load for, its such a balanced combination its simple to find a load for and its very common to see them easily shooting in the 2's and 3's with out much load development.
My rifle was finished 10 days before my hunt last year, did load development and shot it bit before my hunt. I took my Cow talk at 770 and my bull at 986 yards. It's true that Long range hunting isn't for everyone.
I agree in your instance with short action cartridges with mag restraints the 155 is nothing to get exited about, but for a gun that has the room and is throated for it I foresee it having an advantage in wind drift and down range energy in cartridges it was designed for. The 150 and 160 Matrix are great hunting bullets, its just nice that Berger is giving another choice. The numbers will come, they are still just being tested.

Good shooting to you Fredo
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Mornin' Dave! Great to hear from you and congrats on your elk hunt! Can't wait to get the lungs burnin' in CO in October! Did Shawn ever get your 6/204 spun up? (PM me on details, please! )

If ever there were a match, the 195/.28Nosler would be one. I've already conceded that a monster wildcat would be acceptable to help an ultra high BC bullet earn it's bacon, and the .28Nosler certainly qualifies! Although, I'd prolly do a 7-300Norma/Improved myself, and might yet do just that... ;)

I was under the impression that the F-Class crowd liked their 7SAUMs and 7/300WSMs pretty well, too? I can see where the .284Win would be a bit light in the shorts to haul a 195. Much the same, I suspect, how a 6.5x47L or Creed might have trouble throwing this new 155gr. Wonder how many shooting those cartridges will re-barrel to a 1:7 twist , just to lob that sucker downrange? Reckon that's what it'd take to spin one at the anemic MV they'd suffer, wouldn't you think?
 
Untitled.png This really surprised me. For a 6.5x47 running this bullet at 2650fps here is the SG. Keep in mind that an SG of 1.4 is recommended.
 
284winner said:
Well there it is. There's the answer to the twist question. Now can it be moved fast enough to surpass the already proven 140+ class of match bullet out there from non magnum cases ?
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It will depend on the BC. If its a G1 of .685 then its not going to cut it but if its the claimed 0.717 then it cuts about three inches of wind at 1000y. That is enough to save you some points.
 
Grimstod said:
View attachment 1018925 This really surprised me. For a 6.5x47 running this bullet at 2650fps here is the SG. Keep in mind that an SG of 1.4 is recommended.
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I see in the bullet library of that stability program it shows a 140 hybrid. Looks like the 155 is in the actual calculator. You may want to put the 155 in the library and see if things change. Looks like bullet length, weight and proper G7 BC are correct for the 155. Not sure if that matters or not. If the G1 is .717 as stated in an earlier thread, then the stability factor will be off. That changes it to a G7 of .368.
 
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284winner said:
I see in the bullet library of that stability program it shows a 140 hybrid. Looks like the 155 is in the actual calculator. You may want to put the 155 in the library and see if things change. Looks like bullet length, weight and proper G7 BC are correct for the 155. Not sure if that matters or not. If the G1 is .717 as stated in an earlier thread, then the stability factor will be off. That changes it to a G7 of .368.
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The selected bullet was just the template. I was able to get the same results by leaving that blank and just entering the numbers by hand based on what we know about the bullet.
 
Grimstod said:
The selected bullet was just the template. I was able to get the same results by leaving that blank and just entering the numbers by hand based on what we know about the bullet.
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Yep. So based on the predicted BC, a 7.75 stabilizes it. Curious to see what will stabilize it at 3000 fps ???
 
Right now, I'm leaning toward a .260 Rem with a 1 in 8" twist in a 30" barrel for the next 6.5 build. A 147 ELD will be well stabilized (Sg = 1.66 per 4DOF), and the 260 case has the capacity to shoot H4831. Lots of other great 6.5 bullets will work well in that twist if the barrel turns out not to like the ELDs, but not inclined to go with a faster twist for only one promising bullet.
 
Berger.Fan222 said:
Right now, I'm leaning toward a .260 Rem with a 1 in 8" twist in a 30" barrel for the next 6.5 build. A 147 ELD will be well stabilized (Sg = 1.66 per 4DOF), and the 260 case has the capacity to shoot H4831. Lots of other great 6.5 bullets will work well in that twist if the barrel turns out not to like the ELDs, but not inclined to go with a faster twist for only one promising bullet.
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Wouldn't you think that the 7.5 twist barrel would give great performance with all the 140 + weights ? I gotta believe it would.
 
284winner said:
Wouldn't you think that the 7.5 twist barrel would give great performance with all the 140 + weights ? I gotta believe it would.
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I've seen 1 in 8" twists blow up too many 6.5 bullets to be eager to spin them faster. The 1.66 stability of the 147 ELD is high enough for me. Higher stability is not better.
 
fredo said:
Mornin' Dave! Great to hear from you and congrats on your elk hunt! Can't wait to get the lungs burnin' in CO in October! Did Shawn ever get your 6/204 spun up? (PM me on details, please! )

If ever there were a match, the 195/.28Nosler would be one. I've already conceded that a monster wildcat would be acceptable to help an ultra high BC bullet earn it's bacon, and the .28Nosler certainly qualifies! Although, I'd prolly do a 7-300Norma/Improved myself, and might yet do just that... ;)

I was under the impression that the F-Class crowd liked their 7SAUMs and 7/300WSMs pretty well, too? I can see where the .284Win would be a bit light in the shorts to haul a 195. Much the same, I suspect, how a 6.5x47L or Creed might have trouble throwing this new 155gr. Wonder how many shooting those cartridges will re-barrel to a 1:7 twist , just to lob that sucker downrange? Reckon that's what it'd take to spin one at the anemic MV they'd suffer, wouldn't you think?
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Ya its barreled up, just needs to be put in the stock. I built it on the model 7 and you know how it is finding parts. I put it on hold because we were going to throw the barrel on a 700 sa since I had a stock for it. Then I found a model 7 stock, then had to locate bottom metal.. lol.. then some other guns took priority like my Bordern Drop port Dasher! It will get done pretty Quick though, Its going to be fun.

Im sure there will be quite a few try to push those 155's through the 6.5 creed and 6.5 Laupua. The only good thing we may find a surplus of lightly used 6.5 1;7 twist barrels for sale to rechamber and enjoy burning the up,LOL

I was going to do a 300 Norma imp. before i decided on the 28 Nosler, and I still may. The 7-300 Norma Imp. would be a Screamer! I like your thinking. I got a good price on 2 different lots of the 195's. got about 2000. I was going to do a nice single shot 28Nosler for ELR gun to play with, have a lot of brass too. But I may look at the 7-300 Norma imp. I own the 28 Nos. reamer and gauges tough and it shoots so good.
Decisions decision, I have 2 6.5 1;8 Bartliens here, i may do a 6.5 saum or something for the 155's, but i'll wait to see what twist it's going to take. I go pick up my Lawton 7 saum tomorrow I bought from Milo 2.0, once I burn out the 1;9 barrel with the 180's, I might try the 195's in it for a long range varmint shoot swd and myself shoot north of Reno. I bought it to shoot there when the wind is really blowing, which actually is quite often,lol if
 
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