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Hornady 30 Cal .308 178 gr ELD-X

This is a discussion on Hornady 30 Cal .308 178 gr ELD-X within the Ammunition forums, part of the M14 M1A Forum category; Originally Posted by MrG I'm skeptical. Obviously, the radar will (should) show the trajectory of the bullet which is the important thing. But what I ...


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Old February 20th, 2017, 08:16 PM   #46
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Originally Posted by MrG View Post
I'm skeptical. Obviously, the radar will (should) show the trajectory of the bullet which is the important thing. But what I want to see is are recovered projectiles. All they would need to do is get a dumpster (or something similar), line it, fill it with water, and fire the rounds so they drop into the make shift pool. At the distances they are shooting the trajectories would probably have them entering the water at about a 30 degree angle.
I'm having a very hard time believing that a polymer tip deforming in flight wouldn't completely destroy accuracy downrange altogether from the tip creating uneven drag, skewing the trajectory all to hell. Nosler's been at the forefront of polymer tipped projectiles and having shot thousands of Ballistic Tips and Accubonds over the years I have to say that if this were really an issue we'd have heard about it long before now.

It's also kind of interesting that this "issue" only became one right around the time Sierra started really started to market their tipped Matchking line. Hornady has never had the market share Sierra has and has gone to great lengths to malign them for years so to say I'm also skeptical is an understatement.

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Old March 14th, 2017, 02:18 PM   #47
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Originally Posted by Phil McGrath View Post
Where did you here this? I would think you would have too push a bullet near mach 5 before there was enough air friction too melt the tip......
At 2700 FPS your bullet is traveling at around M 2.5. That is enough to generate a lot of heat. More than enough to melt or slightly deform a polymer tip.

An SR-73 would cruse at M 3, and the leading edge of the fuselage would hit around 1,100 degrees due to the compression effect as the SR went through the air. That's why they built it out of Titanium. The windows in the cockpit were 180 F, and made out of quartz glass.

So Hornady made the right call when their Doppler info did not match the computer profiles.

And remember you don't have to "melt" it completely, just deform it a bit to increase drag...

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Old March 14th, 2017, 02:32 PM   #48
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Originally Posted by MrG View Post
I'm skeptical. Obviously, the radar will (should) show the trajectory of the bullet which is the important thing.
The Doppler radar will not show trajectory, only speed at designated distances from the firing point. Hornady did not develop the tips for 100- 300 yard ranges, they developed them for the 800 - 1000 yard ranges.

For around $600 you can buy one of your own Doppler unit, beats the heck out of a Chroney...

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