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July 14th, 2016

Dope for Your Scope — Handy Laminated Ballistics Card

JBM laminated ballistics card zak smith

Tactical ace Zak Smith of Thunder Beast Arms employs a simple, handy means to store his elevation and wind dift data — a laminated data card. To make one, first generate a come-up table, using one of the free online ballistics programs such as JBM Ballistics. You can also put the information in an Excel spreadsheet or MS Word table and print it out. You want to keep it pretty small.

Above is a sample of a data card. For each distance, the card includes drop in inches, drop in MOA, drop in mils. It also shows drift for a 10-mph cross wind, expressed three ways–inches, MOA, and mils. Zak explained that “to save space… I printed data every 50 yards. For an actual data-card, I recommend printing data every 20 or 25 yards.” But Zak also advised that you’ll want to customize the card format to keep things simple: “The sample card has multiple sets of data to be more universal. But if you make your own data card, you can reduce the chance of a mistake by keeping it simple. Because I use scopes with MILS, my own card (photo below left) just has three items: range, wind, drop in MILS only.”

Once you have the card you can fold it in half and then have it laminated at a local office store or Kinko’s. You can keep this in your pocket, tape it to your stock, or tie the laminated card to your rifle. If you regularly shoot at both low and high elevations, you may want to create multiple cards (since your ballistics change with altitude). To learn more about ballistic tables and data cards, check out the excellent Practical Long-Range Rifle Shooting–Part 1 article on Zak’s website. This article offers many other insights as well–including valuable tips on caliber and rifle selection.

ballistics data scope coverScope-Cover Mounted Ballistics Table
Another option is to place your ballistics card on the back of the front flip-up scope cover. This set-up is used by Forum member Greg C. (aka “Rem40X”). With your ‘come-up’ table on the flip-up cover you can check your windage and elevation drops easily without having to move out of shooting position.

Greg tells us: “Placing my trajectory table on the front scope cover has worked well for me for a couple of years and thought I’d share. It’s in plain view and not under my armpit. And the table is far enough away that my aging eyes can read it easily. To apply, just use clear tape on the front objective cover.”

Permalink Gear Review, Tactical No Comments »
March 27th, 2016

Burris Launches New Online Ballistic Services

Burris Ballistics Software Services online drop chart

Burris Optics now offers online ballistic tools to help shooters maximize the potential of Burris riflescopes. The new Burris Ballistics Services site offers easy-to-use software and a comprehensive cartridge/bullet library. With these web-based tools you can analyze your reticle, build a dope card, program an Eliminator LaserScope, and order custom elevation and windage knobs. Burris Ballistic Services are provided online at www.BurrisOptics.com/ballistics.

Burris Ballistics Software Services Reticle Analysis Drop Chart

Burris Reticle Analysis Calculator
The Burris Reticle Analysis Calculator allows users to select their ammunition and define exact environmental conditions, such as altitude, humidity, and wind speed. This allows you to plot the exact holdovers/holdoffs shown by any Burris reticle at any distance. Results are customizable and printable.

Dope Card Builder
The Burris Dope Card Builder is a fully-customizable solution for determining bullet performance at any distance. By using the extensive Burris bullet library users can expect very precise and reliable elevation and windage values for their custom-generated drop chart (aka Dope Card).

Data for Nearly 7000 Cartridges and Bullets
Burris has compiled an impressive database for its online software — nearly 7,000 cartridges and bullets are included from every major ammunition and bullet manufacturer. Rimfire, centerfire, muzzleloader and shotgun shells are included, as well as G1 and G7 profiles (where available) for precise accuracy.

Burris Ballistics Software Services Eliminator Laserscope

Eliminator LaseScope Programming Tool
With the touch of a button, the Burris Eliminator LaserScope will range your target, calculate your needed vertical hold-over (based on your load’s ballistics) and then instantly display a red dot you put right on the target. We’ve used an Eliminator and can affirm that the system works well. For most accurate elevation calculations, you program the Eliminator by entering the Drop value at 750 yards and the Ballistic Coefficient of the cartridge you are shooting. The Eliminator Programming Tool helps you determine the correct Drop Number and Ballistic Coefficient, and lets you fine-tune your results by inputting local environmental conditions.

Custom Knobs
Burris customers can now order custom elevation knobs for many Burris riflescopes. With the online software you can configure a knob for your favorite load and exact shooting conditions (elevation, temp, humidity). You can then submit this knob “blueprint” to Burris and have a custom knob produced.

Permalink New Product, Optics 9 Comments »