Been doing a bit of research and found a few threads on other forums having issues with the 180ELDM blowing up
Has anyone here had any issues with them?
Had any blow up?
I have just started running them and haven’t had any issues.
Cheers
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Been doing a bit of research and found a few threads on other forums having issues with the 180ELDM blowing up
Has anyone here had any issues with them?
Had any blow up?
I have just started running them and haven’t had any issues.
Cheers
What distance, FPS and shot placement are they using? Too many variables tbh.
One of my best mates will only run them in his 280ai. Never had an issue with it on deer/tahr/chamois. Great at mid to LR as runs them at 3100+. If people are running them fast, shooting game closerange and complaining the problem is not the bullet it is the shooter
I’m meaning blowing up mid air, quite a few fellas saying they are getting multiple holes in a target from 1 projectile
From what I’ve read running over 3000fps and 1-8 twist and faster
Ive heard of it with the ELDMs but had no trouble. Seems to be at higher speeds, 3000+
I have heard that too. More likely at 3150fps+
I haven't seen it from 3090 fps in a 8 twist
Unsure twist on the rifle but are doing 3150 and no issues. Lots of rounds too( buys them 500 at a time). Wonder if it is a dodgey run?
I've heard the same about 6.5 147 eldms and seen video of them going off. I've only run about 50 of them so can't say. But 1 guy said he had run 300 in his prc with no issues and now they're blowing up. Another guy had them blowing up from his 7.5 twist creed more at 2700?fps. I wonder if hornady have changed something or if its an issue with different lot numbers?
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Had a few failures with them in 28 nosler so changed to 175 Eld X and great results
175eldx has a very good bc anyway and is a hunting projectile that opens up and follows through like a nosler partition
crunch the numbers on a 1 in 8 twist doing 3000+ fps......its no wonder they are pulling themselves apart. thats a hell of a lot of centrificle force trying to open projectile BEFORE IT TOUCHES RESISTANCE.
Not 180ELDM but pretty sure @300_BLK experienced something similar with them in a different cal
Well documented in the .264 147gr. Have personally witnessed the 147’s blow up at 6.5CM velocity. Not seen anything regarding this issue in .284.
Was at a shoot recently where a guy had a few jackets from the 180 ELDm that he found on the way to a target that never hit the mark. Out of a .280 Nosler exploded in the air. Not uncommon for that case he said.
Jayzusss. That must be one HOT loadQuote:
Originally Posted by superdiver
Ive done a bit of LR testing with the 180 eldm pushing them at 3200 fps plus from an 8 twist and never had a problem, but not a huge sample.
Yep, that must be putting the hurt on his brass and throat.Quote:
Originally Posted by 6x47
With the very high BC there’s no need to send them any quicker than 2850-2900, or to over twist them. I run them in my 7 RM at 2840 in an 8.7 twist barrel and never had a failure.
28" barrel, 2225 and mag primers. Still gets 4-5 firings per brass. He loves to make things more exciting and that load certainly is. Knocked a tahr over at 1140 though so certainly does its jobQuote:
Originally Posted by 6x47
My 28 Nosler started blowing up both the 180 ELD-M’s and 195 Bergers at about 800 rounds.
The bullets that did reach the target were still accurate, but I picked up quite a few jackets of the ones that didn’t get there from the range floor.
Krieger 4 grove 1:8.
that's an interesting piece of data @Matt2308. If it only started happening after that many rounds I wonder if throat erosion or fire cracking in the bore has caused this ? roughing up the projectiles as they go through. Have you tried polishing bore with JB's or autosol ?
Yes was definitely due to the rough throat, if I did another one I’d go with a 5R that should be a bit easier on jackets, althoughQuote:
Originally Posted by chainsaw
7-800 rounds is about all the life that you’ll get out of a 28 Nosler barrel anyway.
No, I just re-barrelled to 7 Blaser and prefer it to the 28 Nosler.
Thats honking for a 280 isn't it?Quote:
Originally Posted by superdiver
280ai. Yes very fast, mate is shooting a smaller pill in his rem mag with alot more powder out of a 24" barrel and not close in speed. With a muzzle break it is a pussy cat tooQuote:
Originally Posted by Kelton
I run 180Eldm @ 3060 in 1-8.4 twist. Proof barrel which uses a 5R type. No issues todate and very accurate. 7mm Blaser Mag. Use them 0-600m at the mo. As the step up is new no experience on animals. But I’d expect spectacular results.
Worn throats probably tear up the jacket.
Nathan Foster has done extensive close and long range testing on this projectile.
alright Ill bite....WHF are you fellas running such tight twists???
I can understand the 1 in 8 for .223 wanting to run heavies eg 80 grn.....still think may as well use .243 ...but why on earth do it in 7mm mag etc???
some of us run 170grn projectiles in bog std 1 in 10 twists with great accuracy going somewhere in mid/ high 2000s and no issue with 150s going quicker...
Ive been accused of looking for dinosaurs to hunt when using 180s in .308 for bush work.... why are you wanting such a heavy for calibre projectile???? and why are you torturing it so extremely with tight twists???
and Jit....the fella you mention ALSO mentions stupidity of extreme speed in tight twists...
maths for you..... 3000fps at 1 in 12 twist= 3000 turns per second X 60 seconds per minute = 3x6=18 add zeros 180,000rpm now make it 1 in 8 twist and you increasing that by 30% so 220,000rpm
once upon a time when the 220 swift was first being played with guys were having same issues you fellas are now...for the same reasons.
you can only swing that bucket full of water around above your head so fast before the handle breaks... projectiles are spinning so darn fast they trying to pull themselves apart the effect of that rifling most create one hell of a lot of heat too... you have ALWAYS needed a hard projectile if you want to drive it fast.... you now driving it fast AND speeding up the spin..... issues were bound to follow.
now if SOME of you fellas are having these projectiles disintergrate in mid air.....yes some arent.... how the hell can you ethically use them on anything other than paper????
its always been touchy subject re varmit type projectiles in the .224s for big game.... head or neck or crease or dont bother...how is what you doing any diferent??? yes its 180grns of little bits,but they still little bits,you have defeated purpose of going heavy....for it to stick together and penertrate deep breaking bones etc...
Ahhh..... 28” barrel will help with velocity.Quote:
Originally Posted by superdiver
Physics...the fast twist is needed to fully stabilise them and achieve the highest bc possible for better ballistics at extended ranges. I know some people run them from 1:9 barrels but they are unlikely to see the full potential of the bc.Quote:
Originally Posted by Micky Duck
I haven’t had any issues shooting the 180 ELD-M’s at 3060 from the 7 Blaser in a Bartlein 1:8 5R and they absolutely hammer game at extended ranges.
Yes exactly, i built my 28N to shoot the 195gr Berger so need the 8 twist barrel. Tried the 180gr eldm to see how they went. They didnt shoot quite as good as the 195s in my rifle so i stayed with the 195s.Quote:
Originally Posted by Matt2308
actually realised my maths is wrong...going from 1;12 to a 1;8 is a 50% increase in spin...3 turns in 24" Vs 2 in 24" so will be 180,000 x1.5= 270,000rpm
so its like going from 3000fps to 4500fps in the forces /strain its putting on projectile....
Most of the fast spin blow ups I have seen, although my experience is limited to a couple of 22-250s, have occurred not far downrange. ie they never made the target. On the odd occassion have even seen the disintegration and it was never far out.
Yep MD, correct.Quote:
Originally Posted by Micky Duck
Easy formula is MV X 720/Twist Rate = RPM
wonder how a 130grn speer btsp .277 would go in a 1;8 twist at 3300fps
eg take a soft 270 projectile and poke it out of a 7mm mag sized case.
anyone care to gamble it would cleanly kill game???? not this K1W1.