Danehunter
Well-Known Member
SIG has recently come out with a new SIERRA6 3 - 18 x 44 (30 mm tube) scope with Bluetooth enabled reticle/windage holdovers. This power range is probably ideal for 90% of hunting scenarios.
Here's what happens in the field:
1-A) Your SIG BDX monocular or KILO 3000 BDX binoculars sent the distance to the SIERRA6 BDX scope. The free BDX app on your phone has programmed your scope to automatically select the proper elevation dot from 7 or 8 pre-set aiming points that you have chosen based on the SIG ballistic library explained below.
In this scenario you have chosen the proper "ballistic GROUP: from the app library. With about 8 groups and 10 to 12 choices per group (similar to but larger than Bushnell's ballistic library for its ARC 1 Mile LRF binoculars) you should easily find a group that fits your cartridge/velocity/bullet BC.
1-B) Your SIG BDX rangefinder (monocular or KILO 3000 binoculars) Bluetooths the distance to both the scope and - if you are using it - a KESTREL 5700 weather meter/ballistic engine into which you have entered the rifle's exact load data. The KESTREL then sends a "firing solution" to your scope with both elevation and windage dots illuminated. (Windage dot is on the main horizontal crosshair and you must look down to the"Xmas tree" display to see which dot to use that is opposite your lighted vertical hold dot.
**With the KESTREL 5700 you have more exact ballistics when with the SIG/SAUER ballistics "library".
Yes, Bushnell has a similar setup with their rangefinder/KESTREL 5700 CONX but that is only with those two tools.
**The true revolution with SIG is that they now have a rifle scope that ALSO receives Bluetooth from a Bluetooth-equipped range finder and KESTEL 5700 weather meter/ballistic engine. VOILE'!
I have been patiently waiting for this 3-way linkup to happen and YIPPEE! it is here!
** In addition the SIERRA6 3 - 18 x 44 BDX scope has improved glass (over the previous SIERRA 3) and has SIG's clever "LEVL-PLEX" reticle based leveling system. At the left and right ends of the horizontal crosshair are small triangles pointing inward. If you cant your scope to the left more than 1 degree the indicator lights up and will not turn off until you have leveled your scope. This beats the hell out of using a bubble level which, by the time you have brought your eye back to the scope it well may have gone off level again! (Don't ask how I know this.)
I await with bated breath the introduction of a wind-averaging laser built into the BDX rangefinders.
Hey, don't laugh, the Big Army is having Leupold, Vortex and L3Harris build them a 1 - 8X "fire control system" that has an integral ballistic engine and bunch of built-in "environmental" sensors for distance, station pressure, temperature, and even wind PLUS a thermal vision mode! With this system you just point the lighted dot at the target(s) and pull the trigger. Even the poorest shot can do much better with this optic. And the better marksmen will be instantly deadly.
For a detailed description of this SIG BDX system see the August issue of Guns & Ammo by former Special Forces sniper Tom Beckstrand. He is an optics expert and has forgotten more about optics than most of us will ever know.
Eric B.
BTW, Concerned that your and your buddy's firing solution Bluetooth devices will interfere with each other? Not to worry, Bluetooth devices "frequency hop" between 79 channels at 1,600 times PER SECOND! So your data is your data and his data is his. Ain't science great?
Here's what happens in the field:
1-A) Your SIG BDX monocular or KILO 3000 BDX binoculars sent the distance to the SIERRA6 BDX scope. The free BDX app on your phone has programmed your scope to automatically select the proper elevation dot from 7 or 8 pre-set aiming points that you have chosen based on the SIG ballistic library explained below.
In this scenario you have chosen the proper "ballistic GROUP: from the app library. With about 8 groups and 10 to 12 choices per group (similar to but larger than Bushnell's ballistic library for its ARC 1 Mile LRF binoculars) you should easily find a group that fits your cartridge/velocity/bullet BC.
1-B) Your SIG BDX rangefinder (monocular or KILO 3000 binoculars) Bluetooths the distance to both the scope and - if you are using it - a KESTREL 5700 weather meter/ballistic engine into which you have entered the rifle's exact load data. The KESTREL then sends a "firing solution" to your scope with both elevation and windage dots illuminated. (Windage dot is on the main horizontal crosshair and you must look down to the"Xmas tree" display to see which dot to use that is opposite your lighted vertical hold dot.
**With the KESTREL 5700 you have more exact ballistics when with the SIG/SAUER ballistics "library".
Yes, Bushnell has a similar setup with their rangefinder/KESTREL 5700 CONX but that is only with those two tools.
**The true revolution with SIG is that they now have a rifle scope that ALSO receives Bluetooth from a Bluetooth-equipped range finder and KESTEL 5700 weather meter/ballistic engine. VOILE'!
I have been patiently waiting for this 3-way linkup to happen and YIPPEE! it is here!
** In addition the SIERRA6 3 - 18 x 44 BDX scope has improved glass (over the previous SIERRA 3) and has SIG's clever "LEVL-PLEX" reticle based leveling system. At the left and right ends of the horizontal crosshair are small triangles pointing inward. If you cant your scope to the left more than 1 degree the indicator lights up and will not turn off until you have leveled your scope. This beats the hell out of using a bubble level which, by the time you have brought your eye back to the scope it well may have gone off level again! (Don't ask how I know this.)
I await with bated breath the introduction of a wind-averaging laser built into the BDX rangefinders.
Hey, don't laugh, the Big Army is having Leupold, Vortex and L3Harris build them a 1 - 8X "fire control system" that has an integral ballistic engine and bunch of built-in "environmental" sensors for distance, station pressure, temperature, and even wind PLUS a thermal vision mode! With this system you just point the lighted dot at the target(s) and pull the trigger. Even the poorest shot can do much better with this optic. And the better marksmen will be instantly deadly.
For a detailed description of this SIG BDX system see the August issue of Guns & Ammo by former Special Forces sniper Tom Beckstrand. He is an optics expert and has forgotten more about optics than most of us will ever know.
Eric B.
BTW, Concerned that your and your buddy's firing solution Bluetooth devices will interfere with each other? Not to worry, Bluetooth devices "frequency hop" between 79 channels at 1,600 times PER SECOND! So your data is your data and his data is his. Ain't science great?
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