Wake turbulence

Martin,
The barn is an anomoly for some of us, and I'm quite sure the other indoor places are different from each other as well. One thing I've noticed is that usually there is always one rifle/ammo combination that works better than all the rest. The folks shooting that particular rifle don't seem to have the same problems that many others encounter. So, if one or two rifles handle the conditions of rising building pressure, different temperatures from relay to relay, etc., why can't everyone else? I don't have any answers, those are just observations. I've had limited luck trying to shoot indoors, even with rifles that were top notch outdoors. I will say that for me the same ammo that shot super outdoors, was pathetic indoors. Hopefully the ammo vendor is there so you can buy ammo, and keep trying something 'til you find something that works.
Getting the rifle to shoot is one thing, and dealing with the sunlight light coming in for the side if you're along one of the walls in another thing to deal with, and mirage, etc.. Shooting there is a lot of fun, but it sure will give you a headache trying to figure it out.
 
I have never been to the barn or any other indoor shoots but I do no something about chicken houses. When I was a young man working as a foreman in a roof truss shop we prefabbed several chicken houses for a customer. These buildings were 29 feet wide by 400 feet long and the trusses were 4 feet on center. The roof material was corrugated sheet metal and the lower part of the walls were corrugated sheet metal and the upper parts were corrugated fiberglass panels. The upper parts opened for ventilation. The concrete floor was sloped to one side so they could be washed out.

These buildings were built as cheaply as possible and they had no insulation at all and they were drafty. Are the buildings we are talking about built similarly?

Concho Bill
 
I don't shoot much benchrest, but the times I shot in the barns I did win something. I always watched for mirage changes and light changes of which there would be plenty. I also found it hard to stay focused with all the goings on and the number of benches shooting.
I hope you all have a good weekend at the Barn and shoot some 250's.
 
Bill: I've shot competition in 2 different barns; The BARN and Piney Hill.

The BARN is a curtain design with visqueen covering the openings. It is acually two barns connected by walkways. It was a laying facility so the floor is a bit different. Not much in the way of insulation

Piney Hill is fully enclosed and insulated. Built very much like you describe otherwise. It is much tighter than the BARN and therefore has very different shooting properties.

I know the chicken ghosts in both of them can cause all manner of havoc on a shooter depending on which bench you are sitting at. It is a different challenge to shoot indoors. No wind flags to watch but everything else contributes and one goes home scratching ones head. One had better keep very good notes, review them each time and hope conditions repeat themselves.

I would not miss the opportunity should it come your way. bob finger
 
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