Post by Bullshop on Aug 22, 2016 9:51:05 GMT -7
Anyone like myself that finds shooting long range with first shot precision an eminently fascinating and endlessly interesting facet of shooting may find this interesting. As I progress in my own knowledge and ability in the field of long range precision shooting I am coming to the understanding that precision long range shooting with high probability of first shot hits is highly dependent on precision data feed to your ballistic calculator program. There are no points of data too small to be inconsequential. Things like corriolis effect, cosine or slope angle, and spin drift were things that I felt didn't amount to enough to consider but I was wrong. Atmospheric conditions such as elevation above sea level, barometric pressure and wind speed and direction are things that were considered but mostly emphasis was on distance to target and wind. My current understanding is WOW!!! there's a lot to this.
I am learning now that the angle of sight weather uphill or downhill has a tremendous effect on the bullet flight path from level line of sight. For this reason an accurate means of measuring the angle of sight is needed so that accurate data can be fed into the ballistic calculating system being employed. There are cosine angle indicators available on the market that are very precise tools that come with the type of price range you would expect to pay for precision tool, spendy! Until my budget will allow a scope mounted cosine indicator I wanted a means of measuring angle so that I can develop data for field use now rather than at some later date.
After a bit of study and head scratching I have come up with a tool I can carry in my range bucket that will very accurately measure line of sight angle to any distant target. This tool was put together from junk and spare parts. The scope is so poor in quality that it had been relegated to a parts box. The rest as can be seen is just some simple parts most shooters will have lying about. The protractor, well thank heavens for home schooling.
It is very simple to operate, just put the cross hairs on your target while holding the spring loaded dial pivot. When you are on target release the spring loaded dial pivot and the dial is locked into place on the protractor then just read where the dial is on the scale. Simple as falling down.
I will try to get Tina to add a pic here because the pic will much better explain than I can with words. I hope this might be helpful to others on a VERY LIMITED BUDGET like yours truly to add to your war chest of tool needed to make that distant shot on the first try.
I am learning now that the angle of sight weather uphill or downhill has a tremendous effect on the bullet flight path from level line of sight. For this reason an accurate means of measuring the angle of sight is needed so that accurate data can be fed into the ballistic calculating system being employed. There are cosine angle indicators available on the market that are very precise tools that come with the type of price range you would expect to pay for precision tool, spendy! Until my budget will allow a scope mounted cosine indicator I wanted a means of measuring angle so that I can develop data for field use now rather than at some later date.
After a bit of study and head scratching I have come up with a tool I can carry in my range bucket that will very accurately measure line of sight angle to any distant target. This tool was put together from junk and spare parts. The scope is so poor in quality that it had been relegated to a parts box. The rest as can be seen is just some simple parts most shooters will have lying about. The protractor, well thank heavens for home schooling.
It is very simple to operate, just put the cross hairs on your target while holding the spring loaded dial pivot. When you are on target release the spring loaded dial pivot and the dial is locked into place on the protractor then just read where the dial is on the scale. Simple as falling down.
I will try to get Tina to add a pic here because the pic will much better explain than I can with words. I hope this might be helpful to others on a VERY LIMITED BUDGET like yours truly to add to your war chest of tool needed to make that distant shot on the first try.
