Down Under Hunter
Well-Known Member
Just in from a session with my edge and cant work a problem out.
This afternoon was extremely hot between 93.5- 102 f.
conditions were
Temp 99.5
Alt 569 ft
BP 29.3
RH 33.5
At my 415 gong that I was only grouping just high on with 7.5 up,a few days ago I shot 2 x 2 shot groups 10.5 " high ??
So I revalidated the data and got some crazy predicted velocty number of 3029 fps for the 300 smk ?? No way I say.
Anyway, used this reading for the 700 hold over and got 14 moa up.
4 out of 5 shots all 9 " high of centre with the fifth dropping into the bull.
Now keep in mind that for the same target only a few days earlier I used 16.75 at was dead on for drop. Now using less ups, I'm well high and I,m wondering if it could be contributed to the extreme heat or maybe some sort of mirage effect that exbal does not factor ??
Also I got to keep in mind that I just shot the 3 shot group of my life at 700 M -1.75 " accross and .75 verticle. Never seen one like that before, so something is sure working right !!
Just fairly new to this and looking for clues.
By the end of the 10 shots, I re validated the data and now have a predicted velocity of around 2867. This seems a bit more like it.
I'm guessing that the reason I'm high is not because of exbal or shooter error, more like the extreme temp. At least I hope so.
Has anyone had like instances when shooting in such temps and how much will mirage effect the poi ??
Cheers all
DUH
This afternoon was extremely hot between 93.5- 102 f.
conditions were
Temp 99.5
Alt 569 ft
BP 29.3
RH 33.5
At my 415 gong that I was only grouping just high on with 7.5 up,a few days ago I shot 2 x 2 shot groups 10.5 " high ??
So I revalidated the data and got some crazy predicted velocty number of 3029 fps for the 300 smk ?? No way I say.
Anyway, used this reading for the 700 hold over and got 14 moa up.
4 out of 5 shots all 9 " high of centre with the fifth dropping into the bull.
Now keep in mind that for the same target only a few days earlier I used 16.75 at was dead on for drop. Now using less ups, I'm well high and I,m wondering if it could be contributed to the extreme heat or maybe some sort of mirage effect that exbal does not factor ??
Also I got to keep in mind that I just shot the 3 shot group of my life at 700 M -1.75 " accross and .75 verticle. Never seen one like that before, so something is sure working right !!
Just fairly new to this and looking for clues.
By the end of the 10 shots, I re validated the data and now have a predicted velocity of around 2867. This seems a bit more like it.
I'm guessing that the reason I'm high is not because of exbal or shooter error, more like the extreme temp. At least I hope so.
Has anyone had like instances when shooting in such temps and how much will mirage effect the poi ??
Cheers all
DUH