Why at 1000 meters.
caliber size
- Thread starter zoolander
- Start date
I really don't know. 
Why are you round about 1200m?
Maybe it has to do with our manual firing operations without laser and FCS.
When you have to be fast at close range you just put the manual trigger at 1000m and fire. At this range the KE has nearly no downfall.
But I really don't know.
They told us do it at 1000m and we did it this way.
Why are you round about 1200m?
Maybe it has to do with our manual firing operations without laser and FCS.
When you have to be fast at close range you just put the manual trigger at 1000m and fire. At this range the KE has nearly no downfall.
But I really don't know.
They told us do it at 1000m and we did it this way.
No, it is russian and ukranian MUZZLE REFERENCE SYSTEMS (MRS). On Abrams their analog is used for correction the loss of boresight:
Correct me if I am wrong, the automatic laser that is carried on Russian tanks is used to temporarly blind enemy tank crewmen that are trying to lock on target, we have pretty much been able to defeat that with stronger filters on the optics of our tanks. What is the boresight range for the T-90 and T-80, and what type of device do they use to accomplish this.
"a. The MRS enables the crew to establish a reference point during boresighting, then check and correct for any change in the relationship between the GPS reticle and the main gun (loss of boresight). Loss of boresight is routinely caused by gun tube droop (gravitational bending) or thermal bending (caused by the uneven heating or cooling of the gun tube).
b. Components of the MRS include:
(1 ) GPS.
(a ) MRS lever.
(b ) MRS wedge prism.
(c ) GPS reticle.
(2) MRS collimator.
(a ) MRS reticle.
(b ) Tritium cell.
(3) Ballistic computer.
(a ) CEU.
(b ) CCP.
c. The MRS provides the computer with a relationship (angle) between the GPS reticle and the end of the gun tube. This angle is established at the time of boresighting. Any droop or heating / cooling of the gun tube will cause deviation from the established angle. The MRS allows the gunner to quickly update the angle deviation in the system, correcting the error.
d. The MRS should be checked after any period when the gun tube experiences a change in temperature, such as firing or before resuming firing after a period of non-firing, and should be updated as necessary. It should be checked frequently during the conduct of fire to ensure alignment remains correct. A radioactive element (tritium) in the MRS collimator glows in the dark to allow alignment to take place during nighttime operation. The MRS is used as a substitute for reboresighting when system boresighting is impractical. MRS updating is preferable to reboresighting during night operations when a distant boresight reference point is unavailable or as an immediate action to correct obvious accuracy problems while in contact with the enemy". (end of citation)
We do it at 1200 meters because of parallax in the gunners auxillary sight, the gunners primary and TIS sight really can be boresighted from 200 - 4000 meters due to parallax being eliminated from them.This is most likely the case with the LEO also.I really don't know.
Why are you round about 1200m?
Maybe it has to do with our manual firing operations without laser and FCS.
When you have to be fast at close range you just put the manual trigger at 1000m and fire. At this range the KE has nearly no downfall.
But I really don't know.
They told us do it at 1000m and we did it this way.
On a M1 series vehicle for a more precise boresight the only thing that the computer is used for is getting a good boresight range from the LRF, this can be done in manual mode if needed. and the computer can be manually updated with each round that comes into play. Our MRS is used only as a last resort, some of the reasons for a precise boresight would be due to tactical situation, ambient temperature changes, replacement of turret components, changes in tank commander or gunner. We do practice boresighting at night, this is a example that you can do for a evening precise boresight: find a structure, place a aircraft recognition panel with heating pads in the upper left hand corner so that the TIS sight can be boresighted, place in the upper left hand corner a flashlight so that the gunners primary and Auxillary sight can boresighted. On a MA1/2 you will start to lose boresight after firing 20 - 25 combat rounds and this is really where the MRS shines thru for a temporary fix. I would like to ask you what the boresighting range is on a T-80 and T-90.