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I have noticed that the 142 seem soft and if cases have to much neck tensions they will deform in the seating process, I found that they like (in Lapua brass) to have a OD neck size of.293 or greater the .295 bushing will give .0025" of tension and seems to produce the best groups in my rifle.
All guns and case lots are different but this was the findings I have found so far. Also be careful with compressed loads they to can cause bullet deformations(more than with the normal AB ). Example is the max load of retumbo would be 58 gr but my cases are full to bullet deformation at 57 great and I am using 56 and getting great accuracy. Will post more as I find velocity true BC in my rifles ect. .
Last edited by fredIII; 06/14/15.
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I discovered the deformation yesterday. I modified a seater to solve the problem. I will have a custom die made to size the neck according to your information.
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Everyday Hunter
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I'm using a redding bushing die and it seems to be working. Also a foster match seater.
Last edited by fredIII; 06/14/15.
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I had the same issue with my LRM until Dennis (thanks again Dennis) neck turned my brass.
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I shot some this morning from my 6.5-284. I used two loads; 57 grains Magpro and 47.4 grains of R17. Velocities should have been around 2940 but I couldn't chrono these because of where I shot them from. I also shot some regular ABs with the same load just to see. First shot at 220 yds hit the orange spot on my target, second shot in the same hole and third shot dropped almost 2" out of the group. Went to 550 on my gong and the BC didn't work. Either .712 is high or my velocities are much lower than I thought. I will shoot at 100 and see what the chrono says. So far, not impressed. They did shoot better than the regular ABs though.
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.712 likely way high Dennis, or possibly both.
- Greg
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the BC didn't work. Either .712 is high or my velocities are much lower than I thought The BC on these 142's are way off! I sent both boxes I bought back to Midway for a refund. Bryan Litz has tested the G1 at .572 average for the 6.5 142 LRAB. http://www.longrangehunting.com/forums/f19/testing-142-lr-accubond-155514/index7.html#post1099994My guess is that Nosler is testing their BC's over 100 yards, at high velocity. This is why their advertised G1 BC's are so much higher than the averages over long range. This is one of the problems with G1 BC's; what's technically correct over 100 yards and high velocity is practically useless over long range. You'll notice that they also advertise G7 BC's for their Long Range Accubonds, which are not nearly as far off from my test results because G7 BC's don't change as much with velocity. If everyone used their G7 BC's, they wouldn't be nearly as far off as they are with the G1's.
Another aspect that Nosler is suffering from is the reality that the longer bullets have faster twist requirements than what many shooters are using so the BC's in some cases are depressed even more thru marginal stability (there's more info on the in the post linked above). Nosler does cite recommended twist rates, but even they are slower than optimal in some cases and they're not shown on the bullet boxes and are difficult to find online.
More test results. http://www.longrangehunting.com/forums/f19/nosler-lr-accubonds-bc-testing-results-137554/
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Everyday Hunter
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I'm not impressed with them either. I don't know squat about testing true B/C vs dreamed B/C, but past about 400 or so yards these things simply wouldn't stabilize in either my 6.5x55 or my 6.5X284, both of which stabilize the 142 Sierra and 140 AMAX well at those ranges.
They'll print a nice round hole and decent groups on the target at 300 but won't hit a 4x4 sheet of plywood at the 4.
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Dog_Hunter,
What're your twists?
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Everyday Hunter
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1/8 for the 6.5x284. Not sure on the 6.5x55 but it is a factory Ruger M77 MKII.
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The Ruger 6.5x55 I had was a 1 in 8 twist. The regular Accubond will work well for any shot I will ever take, I tried the 129's and they worked fine on deer but out at the ranges I shoot a lot of others will work well too.
Gerry.
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I will shoot some 140 hybrids and compare. CBS
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It seems that the bullets with the best BC are the JLK VLD's with the 130gr at .620 and the 140gr at .630. The 130gr bullets shoot nice in my 264 WM. at 3249 fps.
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I was sent 200 of the 140 Hybrids from Berger when they first came out to test them. They shot exceedingly well from both my 260AI and 6.5-284. I could get 3000 fps with Magpro and my 6.5. I shot them out to 800 yards holding 1/2 MOA easily. Seating depth was a non-issue. Whether they worked on game or not was THE issue. I preferred the higher velocity of the 130 Normas (3170) so I stuck with them. Only this week have I tried something else. I am not ready to pass judgement yet but it is looking like the 142 ABLR is not such a great bullet.
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There are a lot of guys that posted their doubts about the Nos ACLR BC1=0.712 on this thread many months ago. You guys were way ahead of me. I did not pay any attention until last week when the bullets arrived and there was no library data in my Quickload version. I had to enter the BC by hand. Then I just started to be suspicious. There goes my fantasies of my new 6.5-06 out shooting my 7mmRM 
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. -Ernest Hemingway
The man who makes no mistakes does not usually make anything.-- Edward John Phelps
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I've shot a few of the 142 ablr's in one of my creedmoors but haven't found a load yet. The 129's are doing ok in my grendal and 260.
Bb
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Well, I was pretty jacked to give these a run till I ran across this thread..
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What's the highest velocity anyone has achieved with these 142 ablr bullets?
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