Follow along with the video below to see how to install our site as a web app on your home screen.
Note: This feature may not be available in some browsers.
Which is why we have sighters.I am a RPLS here in Texas, and have found my local range has the same problem. I hope you can come up with a fix. Tommy Mc
Wow, can of worms opened...
So 3 yards at 100 yards is a 0.03 difference. That would mean a 3% difference at any other given range. Using a .308 RPR shooting a 185gr Juggernaut at 2630fps (my training rifle, coincidentally) lets see what happens at 1000 yards - WITHOUT CORRECTION.
(0.03%)*(1000) = 30
1000+30=1030
The drop at 1000 yards using Strelok Pro (my primary shooting app) is 30.71 MOA
The drop at 1030 yards using Strelok Pro at 1030 is 32.25
32.25-30.71=0.54 MOA.
(0.54)*(1.047)*(10)=5.654 inches
Let's discuss an all-too-probable scenario. I show up at the range early in the morning of the day I want to shoot. I know that today's weather is forecasted at 92 degrees, but I did my work-up at 44 degrees. I stop by the sight-in board to do a quick check and I group slightly higher than usual, so I either hold bottom-of-plate on long shots, or do an actual zero adjustment. (Not wanting to change my zero stop, you can guess which one I choose). The first course-of-fire is a 12" diamond at 1020 yards. I plug in 1020 to Strelok and it tells me 31.73 MOA. Using the same math above I would have seen 30.15 MOA If I had calculated for a 103 yard zero. The bullet sails over the top of the target, most likely off-center because my wind holds aren't tuned in yet.
This actually happened. I went back to the range and found out exactly how it happened.
Now it's 7 months later and I am not in a hurry. If I would have known then what I know now, I may have had better results on that very important first course-of-fire and been much more confident on the following.
Lesson learned... Check your zero distance!
Yes, you just enter the correct distance to your sight-in target into your ballistics software, if you are using one of those.Well now that you know you can compensate right?
Not being a jerk here, but isn't it supposed to be 100 yards from your scope turrets to the target?Old school..... I used my 100 ft. Lufkin tape. From the front
of our benches, Our target frames are 10 inches too long.
Considering how much barrel is hanging over the bench,
close enough.
I don’t know why, but always thought it was from the muzzle.Not being a jerk here, but isn't it supposed to be 100 yards from your scope turrets to the target?
Of course, since the bullet doesn't start to drop until the moment it leaves the muzzle.I don’t know why, but always thought it was from the muzzle.
What's a few inches among friends. I prefer muzzle to target. Data is'ntNot being a jerk here, but isn't it supposed to be 100 yards from your scope turrets to the target?
Not in yard OR meters? How odd.At my range, the distances are neither in yards, nor meters. I've lasered all the ones I regularly use and recorded the values, so it's not a big deal to me. However to anyone that doesn't know, their predicted drops may not always match up very well.
Maybe, but it's fowls around here.I’m betting all the contributors to this discussion are experiencing foul weather.