Author Topic: Hornady 80gr ELD vs 88gr ELD  (Read 557 times)

Offline gump1376

  • Newbie
  • *
  • Posts: 17
    • View Profile
Hornady 80gr ELD vs 88gr ELD
« on: January 01, 2019, 10:50:13 PM »
I was looking at some data of Hornady's 80gr and 88gr ELD Match bullets.  I think this is pretty interesting data.  I was using the PointBlank Ballistics Software to gather the data.  What I found was the 80gr ELD's seem to out perform the 88gr ELD's in overall performance. 

I used the following information for computing my data: 
80gr ELD Match with a 0.458 G1 ballistic coef. traveling at 2850 ft/s. 
88gr ELD Match with a 0.545 G1 ballistic coef. traveling at 2650 ft/s (what I'm at with my 20" BA 1:7 barrel). 
Both at an elevation of 5900 ft (I'm in norther NM) and 70 F and a scope height of 2.5". 

The plots shown in the image are out to 1500 yards with grid lines showing 100 yard increments. 

When comparing energy (lb-ft) at the various distances the 80gr bullets have a higher energy until ~500 yards when the 88's take over; albeit, not by much out to 1500 yards. 

Velocities show the 80gr ELD's out pacing the 88 grainers out to just after 1200 yards. but both are still supersonic out past 1300 yards. 

Looking at the overall drop the 80gr ELD's out perform the 88's by a good margin of ~40" out at 1000 yards.  I wasn't really expecting that with my limited knowledge of BC, but this is good to know that BC doesn't always win! 

With a 10 mph wind, the 88gr ELD's out perform the 80's by ~3" out at 1000 yards.  Just under 1/3 MOA, which could be significant if you're shooting benchrest (which I wont be, I just like hitting steel out at distance). 

Pretty interesting data and it may make me switch from using the 88gr ELD over to the 80gr ELD's.  I gotta try my 88's with H-4895 to see if there's any improvement over using H-Varget and I'm currently at 0.787" for a 4 shot group (I pulled one) at 100 yards.

Offline Burnt Nitrates

  • Newbie
  • *
  • Posts: 12
    • View Profile
Re: Hornady 80gr ELD vs 88gr ELD
« Reply #1 on: January 02, 2019, 04:07:16 AM »
Morning Gump, I'm just starting workups and will be doing the full spread of bullets and powders. I'm finding the same as you from the research in bullet weights. And, my groups are better with the 80's over heavier bullets. Probably a stabilization factor. I'm using 80 Gn Sierra MK's vs 90 Gn MK's in my evals. Also, try the Berger site for stabilization eval: http://www.bergerbullets.com/twist-rate-calculator/
I'm in Northern Virginia at lower altitudes (420' elev) so you've got a bit of an edge with your higher altitudes.
I'm using a 24" E. Arthur Brown (EABCO.com) accuracy barrel with a 1:7 twist.
I'll post again as this all comes together.
Thanks for your post info. Very helpful on my end. Now I need to get some 80 Gn ELD's for comparison with the SIE 80 Gn MK's.
BN

Sent from my XT1585 using Tapatalk


Offline gump1376

  • Newbie
  • *
  • Posts: 17
    • View Profile
Re: Hornady 80gr ELD vs 88gr ELD
« Reply #2 on: January 03, 2019, 10:33:11 AM »
I did some more digging, and added Hornady's 75gr ELD-M to the data.  I used 3000 fps, and a G1 BC of 0.467.  If I can get this up to 3000 fps out of my Ballistic Advantage 20" barrel with good accuracy/precision I'll be golden.  The work ups I did with my 77gr SMKs were only at ~2500-2600 fps so it was similar to my .223 Wylde (but not as accurate).  The below graphs show the Hornady 75gr ELD-M bullets to be outperforming both the 80's and 88's for velocity, and drop out past 1200 yards (my elevation again is 5900'). 

I'll have to see if I can get the 75gr ELDs I was given up to speed.  If not, I'll get some 80gr ELD's and see if I can get those up to speed.  If not, I may be stuck with the 88's which for me, don't seem too bad at ~3/4 MOA at 100 yards.  I do get the occasional flyer and I'm not too sure where it's coming from.  Probably my brass as it's Federal brass that's been fired at different intervals.  I'm probably gonna have to keep all my brass separated into batches of how many times they've been fired, but none-the-less, this data is pretty interesting.

Offline Hammerhead

  • Full Member
  • ***
  • Posts: 172
    • View Profile
Re: Hornady 80gr ELD vs 88gr ELD
« Reply #3 on: January 04, 2019, 02:09:10 PM »
I spent a lot of time chasing the 90 and 95's when I should have been after the lighter bullets. I recently tested some IMR4604 just
because I had it and was pleasantly surprised. Even with the 90 and 95SMK's I found a few loads @ 1/2 moa but 75gr Berger VLD's
and Barnes 78gr TSX were the cat's shizats and shot at .400 ish.

Offline Burnt Nitrates

  • Newbie
  • *
  • Posts: 12
    • View Profile
Re: Hornady 80gr ELD vs 88gr ELD
« Reply #4 on: January 04, 2019, 03:18:55 PM »
Hammerhead, What's your barrel twist rate? Along with the 77's and 80's I'm eval-ing, I'm going to do some work ups on the 88's, 90's and 95's.  My barrel is an E.A. Brown accuracy barrel with 1:7 twist.  Any particular 4064 loads that worked exceptionally well?
Thanks, BN

Sent from my XT1585 using Tapatalk


Offline Hammerhead

  • Full Member
  • ***
  • Posts: 172
    • View Profile
Re: Hornady 80gr ELD vs 88gr ELD
« Reply #5 on: January 04, 2019, 05:31:24 PM »
I'm shooting a 6.5. IMR4064 worked very well with 75 VLD starting at 23.7 grns on up to ....all the standard disclaimers apply. I exceeded
listed max and in my rifle it was quite safe no signs of problems. So work up slowly. I will state though that 24.0 grns was the smallest group at .405 or so and for the first time with the Valkyrie it was repeatable. And by the way that was a 5 shot not 3. Extra velocity is
available with just a little sacrifice in group size but I would never advocate exceeding published maxes.  8) COAL at 2.255 was a great
fit.

Offline Alaska_guy

  • Global Moderator
  • Sr. Member
  • *****
  • Posts: 262
    • View Profile
Re: Hornady 80gr ELD vs 88gr ELD
« Reply #6 on: January 06, 2019, 02:31:36 AM »
I've been shooting the 80 using IMR 4064 and have been very happy.

Offline Burnt Nitrates

  • Newbie
  • *
  • Posts: 12
    • View Profile
Re: Hornady 80gr ELD vs 88gr ELD
« Reply #7 on: January 06, 2019, 04:36:52 AM »
Alaska Guy, Hammerhead, thanks for the info. I'm starting to get the feeling there's more consistency in the 78 - 80 grain bullets. Still gotta try the heavier one to rule them out.
Thanks again.
BN

Sent from my XT1585 using Tapatalk


Offline RDY2313

  • Jr. Member
  • **
  • Posts: 37
    • View Profile
Re: Hornady 80gr ELD vs 88gr ELD
« Reply #8 on: January 11, 2019, 08:43:36 PM »
The 80s at 2975-3000 will out perform the 88. The BC won’t make up for the speed. They like a jump from .20-.35.