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108 eld-m exploding in flight
- Thread starter Hecouldgoalltheway
- Start date
Best way to fix that, stop shooting Hornady bullets. It seems their long for caliber bullets are prone to exploding in flight. I’ve personally experienced this in the 7mm 180 eldm, one lot had 60% pop inflight, other lots are fine. I figure it’s always a gamble with them.
It's hard to believe that hornady and hodgeon would be that far out of synch. 41.7gr according to the hornady book.
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Sorry for some reason I was assuming you were shooting a GT, that's the load data I was referencing.
I don't know how to take a screen shot, but Hodgon is showing 41.6 as the max with H4350 and 108's
It's a common problem.we have heard about for years but the company won't do anything about it.
If you’re using an iPhone, you press the screen lock button (right side) and the volume up button (left side) at the same time, to take a screenshot.
No idea how Androids work, so if you’re using an android phone, maybe someone else can chime-in.
It's the same thing but you use vol down and the screen lock button at the same time for AndroidIf you’re using an iPhone, you press the screen lock button (right side) and the volume up button (left side) at the same time, to take a screenshot.
No idea how Androids work, so if you’re using an android phone, maybe someone else can chime-in.
Is barrel 236 or 237 bore? 236 bore with 7tw will damage bullets once fitecracking or carbon rings develop in the throat. Go 237 on a 6mm always is my rule, I've had no issues with 7 or 7.5 tw in 237 in my experience with 109 eldm, 109 lrht 110 atip, 105 hyb from 2900-3000fps from 6gt. A tougher bullet like the sierra 107 will likely hold together better as it has a tougher jacket. And you'll get a bc boost and better shot to shot consistency.
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This is crazy, I’d never heard of this until stumbling onto this thread. I have shot a couple thousand 147s out of a 1-8twist 6.5creed without any issues. Plan on using the 108s for a 6arc and hoping for around 2650-2700fps out of a 7.5twist. Hoping they work and there are no issues.
Yes they offer 1-7 .237 bore barrels. My 6GT is a Proof 1-7 Comp contour running 109 ELDM’s at 2856fps
The Berger BT Target bullets are as easy to load for as SMK’s as they share the same bullet shape. I ran the 108 BT targets in my BRA and had good luck with them. If you want to try some, I can send you a hand full to run at your current load if you’re interested. I have a partial box. Pm me if you want them.
This is a good general rule of thumb. It will typically keep you safe especially with 5r rifling. You can push some tougher bullets more. I have a 28" 243AI running DTACS at 3140 fps in a 7.5 twist 5r. Also have run Hornady 105 bthp at 3225 from a 26" 243AI in a 7.5 twist 5r with no issues. My 243AI barrels can run until they start shotgunning without blowing bullets. I clean with abrasives every 200 rounds in those to keep carbon in check, and I have to use a borescope because sometimes I have to really go to town on the carbon. Other times not so much.
You have it backwards. 5r is easier on bullets, not harder.
I've also had good luck with hornady bthp. I don't shoot elds. I either go for the good shit (Berger) or the cheap shit (bthp).
Speedy Gonzalez was on you tube saying that all his screamer barrels were .237. That's a clue.
Stop telling everyone the secret. I can still buy bullets when I need them, but not if you keep this up. Keep telling everyone that .065 extra bc makes all the difference in the world. Those old bt target bullets are just a shitty, outdated design;-)
I had 147gr ELD-M 6.5 Creedmoor factory ammo out of a 8 twist AINA Bartlein doing the same thing at a match, just little gray puffs mid air, the spotter saw it first.
Hornady bullets are just junk. I thought maybe they had fixed this but apparently it’s still an issue.
FWIW I’ve ran 65gr Berger BTHP’s screaming fast from a 7 twist 6mm creed with no issue. I doubt it’s an RPM issue. Pick up some 105 or 109 hybrids when you can and don’t look back.
Hornady bullets are just junk. I thought maybe they had fixed this but apparently it’s still an issue.
FWIW I’ve ran 65gr Berger BTHP’s screaming fast from a 7 twist 6mm creed with no issue. I doubt it’s an RPM issue. Pick up some 105 or 109 hybrids when you can and don’t look back.
I was in your squad and watching this happen live was absolutely nuts. Despite your exploding bullets and my constant ejection issues it was great fun and was nice shooting with you!
He is not even close to a max load.
Edit: sorry about the duplicate data. The site is acting wonky on my phone and I didn’t see you had already posted it.
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Hornady's and Hodgdon's load data looks almost identical when comparing the same powder, case, and bullet.
BULLET WEIGHT
108 GR. HDY ELD-M
CASE
HORNADY
PRIMER
WINCHESTER LR, LARGE RIFLE
| Manufacturer | Powder | Bullet Diam. | C.O.L | Grs. | Vel. (ft/s) | Pressure | Grs. | Vel. (ft/s) | Pressure | ||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Starting Load | Maximum Loads | ||||||||||||
| Hodgdon | H4350 | BUY NOW | 0.243" | 2.770" | 37.8 | 2,802 | 49,800 PSI | 41.6 | 3,006 | 60,100 PSI |
Yep, we pretty clearly outlined several pages ago that a 7.5 twist handles them just fine, but a 7 twist (which I have) is a 14% increase in rotation is too much for the bullet to handle. I'm now shooting 115gr vld target, and once I moved about 90 thousandths from the lands, they shoot just fine.
Going to D-tacs when these are gone.
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