Strelok

Ballistic calculator for Android

Supported reticles:

MilDot,
NP-R2 (Nightforce),
TMR (Leupold),
NP-R1 (Nightforce),
Ballistic Mildot (Burris),
XTR Ballistic Mildot (Burris),
MLR (Nightforce),
SPR (Leupold),
4D (C2.5-10x50 Kahles),
4D(C3-12x56 Kahles),
Ballistic Plex (Burris),
BDC Standart (Nikon),
LR Duplex (Leupold),
BDC 600 (Nikon),
EBR-1 MOA (Vortex),
Mil-DotBar (Millet),
P4L (Schmidt&Bender),
MTR-1 (March),
BR (Swarovski),
PSO-1 (Russia),
BDC Predator (Nikon),
A1Optic,
Ballistic (Bushnell),
MP-8 Dot (IOR),
Gen 2 MilDot (Premier Reticles),
Varmint Hunter's (Leupold),
Accu-Range (Redfield),
Cabelas Alaskan Guide,
EBR-1 MRAD (Vortex),
Dead-Hold BDC dots (Vortex),
MP20 (Falcon),
EBR-1 MRAD s1 (Vortex),
EBR-1 MOA s1 (Vortex),
Enhanced Mildot (Falcon),
Rapid Z 1000 (Zeiss),
Mil-DotBar 1 Mil (Millet),
Smart Reticle (Simmons),
NP-1RR (Nightforce),
6-dots MilDot (CenterPoint),
Rapid Z 5 (Zeiss),
TDS-4 (Swarovski),
Boone and Crockett (Leupold),
Ballistic 2.5-10x42 (Leica),
Ballistic 3.5-14x42 (Leica),
Rapid Z 7 (Zeiss),
9-dots MilDot (CenterPoint)
Gen 2 XR (Premier Reticles)
LV5 Velocity 1000 (Nightforce)
MSR (MakSnipe)
BDA (2.5-10x48 Docter),
BDA (3-12x56 Docter),
LRMOA (6.5-24x50 Sightron),
LRX (Nikko Stirling),
SS1-4 Donut (SWFA),
618-V2 (Shepherd),
Mil-Quad (SWFA),
NP-2DD (Nightforce),
Rapid Z 600 (Zeiss),
MCZ (Delta),
Ballistic CQ 5.56 (Burris),
EMDR (Weaver),
EBR-1 MOA s1 (6-24x50 Vortex),
Mil-Scale GAP (US Optic),
BRX/BRH (Swarovski),
XTR Ballistic 5.56 (Burris),
XTR Ballistic 7.62 (Burris),
Rapid Z 800 (Zeiss),
DOA 600 (Bushnell),
Dead-Hold BDC hashes (Vortex),
TMCQ MRAD (Vortex),
ML16 (Falcon),
CMR (Hi-Lux/Leatherwood),
LP20 (Falcon),
K-5.56 (Meopta),
Ballistic Plex (2X-7X Burris),
Ballistic Plex (3X-12X Burris),
NP-1RR (Nightforce),
SA.B.R. (Leupold),
EBX (Weaver),
SCB (MTC Optics),
A8 Varmint (Schmidt&Bender),
H-25 (Horus Vision),
BDC 200, Nikon,
BDC 150, Nikon,
BDC 05-001, Minox,
LRV Duplex, Leupold,
EBR-1 MRAD s1, 6x-24x Vortex,
BRT, Swarovski,
Range Finder, NcStar,
RangeFinder, Barska,
Rapid Z Varmint, Zeiss,
BDC 05-001, Minox (at 10x),
MilDot (US Army),
EBR-2B MRAD, Vortex,
RF, Lynx (LX2 3.5-10x50)

for this reticles my program can calculate holdovers according reticle subtensions

Installation

Scan QR-code with Android device

or click here if you browse this page with Android,

or start application "Market" on you Android phone and search "strelok",

or click here

Frequently Asked Questions (FAQ)

Q. What is your definition of "scope height"?

A. Distance between center line of scope and center line of bore. Like here.

Q. Would it be possible to support reticle duplex for hunting rifle?

A. Sorry, but duplex reticle has no subtensions, so calculate holdovers is not possible. Without holdovers the presence of this reticle in my program does not make sense.

Q. What power zoom on the scope needs to be used when I use this?

A. Scope manufacturer usually specifies in the manual "power setting for using the ranging features". Use this zoom. Holdovers values are valid ONLY at this magnification of your scope!

Q. Would it be possible to support different scope zooms and indicate current magnification?

A. I support reticles, not a scopes. Sorry, but it  iimpossible for me to account all zoom ranges for all scopes and all manufacturers.

Q. Where is cartriges base?

A. Coming soon.

Q. Which drag function used in the program?

A. G1.

Explanation of terms:

1. Zeroing weather:
Weather at which you zero the rifle (scope) in

2. Zeroing weather: match current weather:
Weather at which you zero the rifle in match the weather you shoot the range
Another words, you zero in the rifle and shoot the range at the same place and time

3. Zeroing weather: enabled (disabled):
If zeroing weather enabled, the program will consider a difference between zeroing weather and present weather.
If zeroing weather disabled, the program will consider that zeroing weather and the present weather are identical.

4. On how many percent bullet speed will change at change temperature on 15 degrees:

Suppose, you have 2 bullet velocity mesurement. 1 and 2 (for different temperatures):
TempDiference = temp_2 - temp_1;
SpeedDiference = speed_2 - speed_1;

TempModifyer = SpeedDiference/TempDiference*15/speed_1*100;

TempModifyer - this is parameter we need for input to my ballistic calculator.
2.5% - this is for very middle quality powder. Best powders can have 1.2 or so.

Here is simple calculator for this purpose

MOA - minute of angle

MIL - miliradian. The miliradian is a measure of angle and there are 6400 of them in a circle.

clicks - clicks of scope knob

Hor. - Horisontal adjustrment

Vert. - Vertical adjustrment

See also: Ballistic calculator for Symbian, iPhone and Mac OS X

E-mail me: igor@borisov.mobi (russian, english)