Comments on: Barnes Calculates Ballistics Using Doppler Radar Speed Data

By: AMcNeil

AMcNeil — Tue, 11 Dec 2018 02:47:46 +0000

They didn’t say no one had ever done this before ! They are gathering the data for themselves and are going to use it in their manuals ! Then it will be available to the the public. In that form. If they were branding over they would have just stole litz’s data ! And maybe they are the first to use dual Doppler radar for data to be used in a published loading manual

By: Dsmith

Dsmith — Sun, 19 Jul 2015 22:46:06 +0000

Just opened up one of Bryan Litz books, this article reads nearly verbatim from his book, even the graphs look super similar. I am just a Texas cow punching cowboy but that would get you shot here. If you are going to be bragging and talking up how something is all that, you need to at least be original or give some credit where it is do at minimum. That kind of behavior makes me question a lot of things about this article. Don’t know if things are different for the folks out east, but when you catch a guy branding over yours, he is a no good skunk! And nothing he says after that is worth a plug nickel.

By: Dsmith

Dsmith — Sun, 19 Jul 2015 21:14:56 +0000

Didn’t Bryan Litz do this 3-4 years ago for 100’s of bullets. I don’t think he made the data available to the public, but it is in my Kestrel w/ Applied ballistics for sure. I heard the list is over 500 bullets now. Out here in west Texas we shoot long range all the time and the Kestrel AB is spot on to some ridiculous ranges, 2000+ meters super rare to have more than 1 Moa vertical dispersion w/ horizontal being on me and my wind calling ability. Does Barnes even have any Aerospace Enginners or qualified ballisticians. Hopefully so, all the fancy pictures and cool high tech gear is useless unless you. Know how to use it and then analyze what it is telling you. Looking forward to giving there data a try at long range. One more thing not saying there bullets are bricks, but you can build a trajectory for a flying brick, that doesn’t make it any better of a bullet just because you can predict it.

By: Anri

Anri — Thu, 16 Jul 2015 19:20:40 +0000

Real drag functions usually is better than cool pictures.

By: JPeelen

JPeelen — Thu, 16 Jul 2015 18:36:15 +0000

It is great news that Barnes is doing actual drag measurements. Hopefully they will make the results available in a format that can be used by exterior ballistics programs (as Lapua did).

6DOF programs like PRODAS are nice, but they require many more bullet parameters than radar drag data. These can only be obtained in a spark range. A better service to the shooting community would be making the drag data available.

By: Neil Gibson

Neil Gibson — Thu, 16 Jul 2015 18:26:51 +0000

That’s more like it. Proper ballistic instrumentation

Two Infinition Doppler radars by the look of it. One 10.525 GHz (X-band) BR-29015 and one 35.5 GHz (Ka-band) BR-3503. The former for long-range work, the latter for in-bore (yes measurements of the velocity within the barrel) and smaller projectiles. I’ve used both types (but not make) many, many times. Wonder if they have the spin analysis software? You can get the projectiles spin rate from the Doppler signal too if the projectile is modified suitably, or just wobbles. I managed to get the spin off a unmodified 5 mm (.20) airgun pellet, well slug, quite often.

http://www.infinition.com/site/index.php/us/products-us/10-ghz-en-us/br-29015-en-us

http://www.infinition.com/site/index.php/us/products-us/35-ghz-en-us/br-3503-en-us

By: H65

H65 — Thu, 16 Jul 2015 15:58:29 +0000

Will they do the same for their LRX, TTSX, TSX?