SH-BDC RETICLE AND BALLISTIC CALCULATOR

USER GUIDE

Service and Repair

If warranty problems arise or repairs are necessary, contact the STYRKA customer service department at 1-844-211-6915. We promise prompt attention and service, as we understand the importance of optics to your hunting experience. And, we take pride in providing not only outstanding products, but excellent service as well.

Warranty

It’s all about the experience! At STYRKA, we strive to make sure your experience in the fi eld is a great one. And we stand behind our products to do just that. That’s why the STYRKA Pride Warranty is so simple. In the event of damage or malfunction, we will repair or replace your STYRKA product free of charge. No questions asked. No registration required. No receipt needed. No matter who bought it. The only caveat? The warranty doesn’t cover theft, loss or intentional damage. It gets better. Send us your STYRKA product and we’ll clean and tune it up once per year. Regular maintenance helps keep your STYRKA performing like the day you bought it. Again, it’s all about the experience, and we want yours with STYRKA to be the best.

STYRKA SH-BDC Reticle and Ballistic Calculator

Thank you for purchasing a STYRKA rifl escope utilizing the SH-BDC reticle. The SH-BDC reticle is a Ballistic Drop Compensation type reticle designed for hunting applications from 100 yards to 600 yards and offers a hold-over solution for most centerfi re rifl e calibers. It is important to note that the reticle is designed for a broad range of calibers, bullets, and atmospheric conditions. It is the responsibility of the user/shooter to know where their particular rifl e and bullet combination is going to impact on target by testing the specifi c ammunition and rifl e out to varying distances prior to using it past the zero range in hunting conditions.

The reticle is based upon the assumption that users will zero the rifl e at 100 yards. A 200 yard zero may be used but it can have an effect on the performance of the BDC hold lines. Some calibers (light, fast bullets) may actually match up to the reticle better using a 200 yard zero. Again, this is the responsibility of the user/shooter to understand and evaluate on a case by case basis using the STYRKA SH-BDC Reticle Map and STYRKA Ballistic Calculator.

WARNING: Never look at the sun while using your rifl escope. Looking at the sun can cause permanent eye damage.

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Reticle Focal Plane

All rifl escope reticles can be defi ned as being either fi rst focal plane (FFP) or second focal plane (SFP). This is determined by the internal location of the reticle in the rifl escope. STYRKA rifl escopes utilizing the SH-BDC reticle are all of second focal plane design and located behind the erecting lenses and nearer to the eyepiece. In order for the reticle to function properly the rifl escope must be set to the highest magnifi cation setting.

Side Focus / Parallax Adjustment

STYRKA SH-BDC rifl escopes without a side focus adjustment to correct parallax are factory set to be parallax free at 100 yards. For SH-BDC rifl escopes with a side focus adjustment knob, be sure to set the side focus knob so that the yardage referenced matches the distance to the target.

Note: If you are unsure of how to correct for parallax see “Side Focus / Parallax Adjustment” in the rifl escope manual.

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Windage

The STYRKA SH-BDC reticle has windage lines so that windage can be compensated for at the same time as distance. The ends of each windage line represents the wind drift value calculated in the ballistic calculator for the gun and ammo combination selected based on a straight cross-wind to the shot. In addition, the fourth, fi fth and sixth windage lines include a hash at the midpoint on each side to designate a half wind hold.

Fig. 2

Full wind hold

Half wind hold

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Ballistic Calculator

The STYRKA ballistic calculator is designed to be an effective tool for all levels of users. The amount of data that can be entered into the calculator is scalable so that more and more data can be entered as the user becomes more profi cient and advanced. For someone new to longer distance hunting, a large portion of the data is pre-populated to make it simple and easy to obtain calculations that can then be verifi ed at the range. For more advanced users, pre-populated data can be overwritten and more precise data can be entered for more refi ned calculations (it is still recommended that data is verifi ed at the range before using in actual hunting situations).

The STYRKA ballistic calculator is available as an app for iOS and Android platforms and is also available as a web based program that can be accessed from the STYRKA website at www.styrkastrong.com.

Using the Ballistic Calculator

The STYRKA ballistic calculator can easily provide you with holdovers for the SH-BDC reticle. The instructions below will walk you through the process of getting holdovers from both the mobile and web based versions of the calculator.

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Sign In – Mobile Version

You are not required to create an account to use the STYRKA ballistic calculator but we recommend that you create an account, as this allows you to save created data so that it can be referenced in the future. If an account is not created, the data will have to be entered every time the calculator is used.

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Gun Safe – Mobile Version

In this screen, you will create guns that can be stored in your “Safe” (with user account). Once a gun is created, it can be saved and will be added to your “Gun Safe” for future use. To create a gun press the “+” icon, enter a name for your gun, select the caliber from the drop down list and select the type of scope. “Height over Bore” is pre-populated but can be changed by simply selecting the box and entering new data. Press “Save” once all data has been entered and you will move to the “Ammo Can” screen.

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Ammo Can – Mobile Version

In this screen (see page 8), you will create the ammunition for the gun created in the previous step. Once an ammunition is created, it can be saved and will be added to your “Ammo Can” for future use. If you are creating ammunition for the fi rst time, you will automatically be taken to the ammo creation screen. If an ammo has already been saved, you will have to press the “+” icon to create a new ammunition. To create a new factory ammunition, enter a name for your ammunition, select the manufacturer, caliber, bullet model and weight from the drop down lists. Once the weight is selected, the velocity, drag and ballistic coeffi cient will be automatically populated. The zero range default is 100 yards, but this can be changed if you sight in your rifl e at a different distance, for example, 200 yards. To create a handload, follow the same steps above but you will have to manually enter many of the fi elds. Press “Save” once all data has been entered. You will be asked if you want to add this combination of the gun and ammo created to your “Favorites”. Select “Save” if you want to add the gun and ammo combination to your favorites, or “Not Now” if you do not want to save it as a favorite or want to do so at a later time. Either selection will take you to the “Target Screen”.

Note: A pre-populated name for favorites is generated by combining the saved name of the gun and ammo created or selected. You are able to change the name of this combination before saving it to your favorites. We recommend creating a name that has meaning to you.

Ammo Can – Mobile Version (continued)

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Target – Mobile Version

In this screen, you can choose to enter the range to a specifi c target, along with the wind angle and speed at the target. You will be shown an exact holdover solution for the data entered on the “Results” screen. You can also choose to enter the values that you would like to be shown in the “Table” view of the “Results” screen. You are not required to enter any additional data and can simply press “Quick Results” to be taken directly to the “Results” screen. If you choose to be taken to the “Results” screen, results are given based on default weather averages and at an altitude of sea level. If you wish to enter additional information press “Next” to be taken to “The Field” screen.

Note: To enter accurate wind data the use of a handheld wind meter will be needed.

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The Field – Mobile Version

In this screen, you can enter atmospheric conditions and elevation to obtain more accurate results for the current conditions. The pre-populated atmospheric conditions on screen are default averages and can be overridden by selecting each fi eld and entering data manually, or you can press the weather icon to pull in local weather data based on the location of your phone. When the weather icon is pressed, weather and altitude data will be pulled into the fi elds automatically. As in all screens, the information can be overwritten at any time to enter more refi ned data.

Note: Not all devices will pull altitude data when the weather icon is pressed. If altitude data is not pulled it will have to be entered manually.

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Summary – Mobile Version

The “Summary” screen is where you will verify all of the data entered before calculating the results. From this screen you can make changes if needed, or proceed to the “Results” screen by pressing “Next”.

Results – Mobile Version

This screen (see page 13) provides the results entered into the calculator. The data is populated in table form and visually with the data shown on the reticle. From the “Results” screen you can easily toggle between the “Table” and “Reticle” views as desired.

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Results – BDC Reticle – Mobile Version

In the “Reticle” view, the holdovers for each line will appear on the right side of the reticle and the wind drift value for the ends of the horizontal hold lines on the left side of the reticle. Using the screenshot on page 13 of the “Reticle” view, the ends of the horizontal holds represent an 11mph cross-wind for this gun and ammo combination. The vertical hashes at the mid-point of the third, fourth and fi fth hold line represent a half wind value, or in this case 5.5mph. If a target range and target wind value was entered in the “Target” screen, the holdover for the target range and target wind value is expressed as a red dot (if a target range was not entered the red dot will appear at the center of the crosshair). The results can be printed from the web version of the calculator for reference and verifi cation at the range.

Results – Mil Dot or Other Reticle – Mobile Version

If the “Mil Dot” scope is selected in the gun creation screen, the “Results” page will show the Mil Dot in the “Reticle” view, but there will only be a holdover solution for a specifi c target entered in the “Target” screen. A holdover for each Mil Dot will not be given. If the scope selection is “Other” in the gun creation screen, the “Results” page will only generate the drop table.

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Landing Page – Web Version

When entering the STYRKA Ballistic Calculator from the STYRKA Homepage, you will be directed to the STYRKA SH-BDC Ballistic Calculator landing page. From this page you can click on links to the App Store or Google Play store to download the mobile version of the calculator, or click the link in the upper right hand corner to be taken to the web based calculator.

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Sign In – Web Version

From the Landing Page, you will be directed to the STYRKA Ballistic Calculator. You can begin entering data right away to get results as you are not required to create an account in order to use the STYRKA Ballistic Calculator. We recommend that you create an account, as this allows you to store data so that it can be referenced at any time. If you are a new user, click “Create Account” in the upper right hand corner to create a user profi le. If you are a returning user, click “Sign In” to enter your username and password to access saved data.

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Gun – Web Version

Click on the “Gun” fi eld to create guns that can be stored in your “Gun Safe” (with user account). Once a gun is created, it can be saved and will be added to your “Gun Safe” for future use. When you click on the “Gun” fi eld, a pop-up window will appear. In this window enter a name for your gun, select the caliber from the drop down list and select the type of scope. “Height over Bore” is pre-populated, but can be changed by simply selecting the box and entering new data. Press “Save changes” once all data has been entered and the window will close.

If you have an account, your saved guns can be selected from the drop down list in the “Gun” fi eld or you can click on the “Gun Safe” link in the left navigation bar.

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AMMO – Web Version

Click on the “Ammo” fi eld to create an ammo for the gun created in the previous step. When you click on the “Ammo” fi eld, a pop-up window will appear. To create a new factory ammunition, enter a name for your ammunition, select the manufacturer, caliber, bullet model and weight from the drop down lists. Once the weight is selected, the velocity, drag and ballistic coeffi cient will be automatically populated. The zero range default is 100 yards but this can be changed if you will sight in your rifl e at a different distance, for example 200 yards. To create a handload, follow the same steps above but you will have to manually enter many of the fi elds. Press “Save changes” once all data has been entered and the window will close.

If you have an account your saved ammo can be selected from the drop down list in the “Ammo” fi eld or you can click on the “Ammo Can” link in the left navigation bar.

Note: If you have an account you can save created gun and ammo combinations as favorites by clicking the “Add as Favorite” button under the “Ammo” fi eld on the main screen. When clicked, a name for the combination is automatically generated by combining the saved name of the gun and ammo created or selected. You are able to change the name of this combination before saving it to your favorites. We recommend creating a name that has meaning to you.

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Target and Wind – Web Version

Use these fi elds to enter the range to a specifi c target along with the wind angle and speed at that target. You will be shown an exact holdover solution for the data entered on the “Results” screen. These are not mandatory fi elds and can be left blank if you do not need a holdover solution for a specifi c target.

Note: To enter accurate wind data the use of a handheld wind meter will be needed.

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Table Output – Web Version

These fi elds are used to enter the values that you would like to be shown in the “Table” view of the “Results” screen. The default settings will output drop and windage values for every 25 yards from distances of 0 to 1000 yards in inches. Enter the data into the fi elds and select the drop and windage units that you would like to see output on the “Results” table view.

The Field – Web Version

These fi elds are used to enter atmospheric conditions and elevation to obtain more accurate results for the current conditions. The pre-populated atmospheric conditions on screen are default averages and can be overridden by selecting each fi eld and entering data manually, or you can click the “Get Local Weather” link to pull in local weather data based on your location. When the “Get Local Weather” link is clicked, weather and altitude data will be pulled into the fi elds automatically. As in all screens, the information can be overwritten at any time to enter more refi ned data.

After all data has been entered click on “Show Me Results” to be taken to the “Results” screen.

Note: Not all devices will pull altitude data when the “Get Local Weather” link is pressed. If altitude data is not pulled it will have to be entered manually.

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Results – Web Version

This screen provides the results entered into the calculator. The data is populated in table form and visually with the data shown on the reticle. From the “Results” screen, you can easily scroll up and down between the “Table” and “Reticle” views as desired.

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Results – BDC Reticle – Web Version

In the “Reticle” view, the holdovers for each line will appear on the right side of the reticle and the wind drift value for the ends of the horizontal hold lines will be represented on the left side of the reticle. Looking at the screenshot on page 25 of the “Reticle” view, the ends of the horizontal holds represent a 12mph cross-wind for this gun and ammo combination. The vertical hashes at the mid-point of the third, fourth and fi fth hold line represent a half wind value, or in this case, 6mph. If a target range and wind value was entered in the “Target” and “Wind” fi elds, the holdover for the target range and target wind value is expressed as a red dot (if a target range was not entered, the red dot will appear at the center of the crosshair). The results can be printed by pressing the “Print” button at the bottom of the page.

Results – Mil Dot or Other Reticle – Web Version

If the “Mil Dot” scope is selected in the gun creation screen the “Results” page will show the Mil Dot in the “Reticle” view but there will only be a holdover solution for a specifi c target entered in the “Target” and “Wind” fi elds. A holdover for each Mil Dot will not be given. If the scope selection is “Other” in the “Gun” creation screen, the Results page will only generate the drop table.

The ballistics calculator is only as good as the data entered into the program. We encourage you to recheck your entries and spend time at the range verifying data.

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For complete specifi cations and product information, visit: WWW.STYRKASTRONG.COM 1284 Corporate Center Drive, Suite 175, Eagan, MN 55121 USA Tel: 651.330.1505

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