echo3mike
Member
This will be the first in (hopefully) a series of exercises designed to give members a chance to work out firing solutions (sight adjustments) using real world data. While there are many members here who can get to ranges longer than 100yds, most members have limited access to ranges longer than this or don't have the background or opportunity to work with the more intricate aspects of marksmanship. These exercises will give members here an opportunity to work out some of the problems associated with rifle marksmanship.
The calibers selected for these exercises are fairly common. Most members have some familiarity with them. Regardless of the level of familiarity, I'll try to provide enough information to allow those members who don't have the background ample opportunity to participate.
The process is simple. Use the data given in the post and ANY OTHER SOURCES YOU HAVE AVAILABLE to acquire the firing solution. There are a number of ballistic freeware websites available (including JBM's Ballistics Page , and Point Blank Ballistics Program to name two) that can be used to get the basic trajectories and some of the more advanced data. Other sources include military manuals, marksmanship training books, other BBs' and such. As a courtesy, please cite your references and / or explain your process so that others can learn as well. All the information you'll need to solve the problem will be in the post. I'll post the answers after the post has died, or I'll PM the solutions if needed.
SHOOTING EXERCISE I
So you finally get out for some trigger time to your favorite hunk of land to play with your Winchester 70 in 30.06. It's a weatherman's favorite day, pure Standard Atmospheric Conditions (SAC): 59.6 degrees F, Barometric Pressure of 29.92 in Hg, 0% humidity, and your range is located at 0ft ASL. You got your 100yd zero the previous weekend, and it's still on the rifle. It looks like your psuedo-M2 Ball handloads ( Sierra .308 cal 150gr FMJBT w/ BC at 0.266, MV of 2740fps) are working well.
Unfortunately there's only one really safe direction to fire where you're shooting...and it looks like someone has left a 55 gallon drum right out there...and kind of far away. Since it's been raining for a few days, the drum is probably full of water...too heavy to move safely. A few holes in that drum would make it easier to move, wouldn't they? You set your gear up and pull out your laser range finder to get the distance...500yds exactly.
The wind seems to be pushing your wind flag out to about a 40 degree angle to the pole, and it's coming from 1:30. You also note some dust and loose paper being raised by the wind.
Exercise:
- with the given information and any source available to you, what windage and elevation adjustments are needed to engage this target from your 100 yd zero? (Note: use MOA instead of "clicks").
S.
The calibers selected for these exercises are fairly common. Most members have some familiarity with them. Regardless of the level of familiarity, I'll try to provide enough information to allow those members who don't have the background ample opportunity to participate.
The process is simple. Use the data given in the post and ANY OTHER SOURCES YOU HAVE AVAILABLE to acquire the firing solution. There are a number of ballistic freeware websites available (including JBM's Ballistics Page , and Point Blank Ballistics Program to name two) that can be used to get the basic trajectories and some of the more advanced data. Other sources include military manuals, marksmanship training books, other BBs' and such. As a courtesy, please cite your references and / or explain your process so that others can learn as well. All the information you'll need to solve the problem will be in the post. I'll post the answers after the post has died, or I'll PM the solutions if needed.
SHOOTING EXERCISE I
So you finally get out for some trigger time to your favorite hunk of land to play with your Winchester 70 in 30.06. It's a weatherman's favorite day, pure Standard Atmospheric Conditions (SAC): 59.6 degrees F, Barometric Pressure of 29.92 in Hg, 0% humidity, and your range is located at 0ft ASL. You got your 100yd zero the previous weekend, and it's still on the rifle. It looks like your psuedo-M2 Ball handloads ( Sierra .308 cal 150gr FMJBT w/ BC at 0.266, MV of 2740fps) are working well.
Unfortunately there's only one really safe direction to fire where you're shooting...and it looks like someone has left a 55 gallon drum right out there...and kind of far away. Since it's been raining for a few days, the drum is probably full of water...too heavy to move safely. A few holes in that drum would make it easier to move, wouldn't they? You set your gear up and pull out your laser range finder to get the distance...500yds exactly.
The wind seems to be pushing your wind flag out to about a 40 degree angle to the pole, and it's coming from 1:30. You also note some dust and loose paper being raised by the wind.
Exercise:
- with the given information and any source available to you, what windage and elevation adjustments are needed to engage this target from your 100 yd zero? (Note: use MOA instead of "clicks").
S.
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