Why shooting in shade is a wind force multiplier

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Sooo, I'm out at my 25 meter range with my FX Crown .25, a gun I am beyond familiar with. Absent very bad pellets, gale force winds, or immoderate alcohol consumption, it shoots virtually a 1 hole group consistently at that distance. 

Today wind is like 5 mph with frequent gusts up to maybe 8 or 9.

It's also very sunny, and hot.

I shot 6-16 shot mags, and I'm seeing through my scope that my pellets are not going where I intend. Both vertical, and horizontal shift. Not a whole lot, but much more than I'm used to in these conditions for sure.

Dont get me wrong, the groups arent completely out of whack, just not in line with this gun in this weather, and my current sobriety level.

I went to the target and confirmed what I saw in the scope. The first pic is that target, and the 2nd pic shows why the deviation, if you look closely and think about it.

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I had put up the umbrella and the gusts.....1




 
See why you are giving away that floor cleaning stuff. Don't need it with plywood. Anything that gets on it just adds character! Would have staggered the joints tho.

We just laid that over the old deck that wasnt treated, but painted. We've been waiting for the forcast of a few days with no freakin rain to paint the new plywood. At least we bought treated stuff this time so maybe it will last more than 2 years.


 
Girl you always like to throw a sneaky out there I see what your talking about good point on what outside forces can do to your shooting platform LOL, 

I would have thought the wind blowing the umbrella around would have had more effect on a light table like that.

It does during high winds, but in light wind my weight steady it some. It's also a different table than I've used before. Same size and kind tho, the other one I was using rusted away
 
I've got the fix ;-)

From the looks of the shadow,switch places with the tables. Move the larger umbrella table where the little table sits in the picture and vice versa. Then shoot from the little table that isn't affected by the wind on the umbrella? It should still be in the shade from the way the shade is showing as pictured?

Still, that's some mighty fine shooting!

Fuss
 
I've got the fix ;-)

From the looks of the shadow,switch places with the tables. Move the larger umbrella table where the little table sits in the picture and vice versa. Then shoot from the little table that isn't affected by the wind on the umbrella? It should still be in the shade from the way the shade is showing as pictured?

Still, that's some mighty fine shooting!

Fuss

I would except that table is about to fall apart. I need to get a heavier table, like a wood picnic table, or better yet, an actual shooting bench