SCATT: What trace length do you get with a rested rifle?

bluetentacle · Post by **bluetentacle** » Sat Oct 08, 2011 9:39 pm

Today I conducted an experiment with SCATT. I put my rifle on a front rest and rear bag, and made shots with SCATT from the floor. The results were illuminating.

- With incandescent ceiling lights on, the SCATT trace on the 50-meter ISSF rifle target registers anywhere from 30mm-80mm. The length of the trace is mostly due to heavy vertical vibration.
- With the ceiling lights off, the trace length dropped to 12-14mm.

Other factors, such as whether I turn the single LED bulb eluminating the target on or off, and whether I cover the floor with non-reflective material, have no effect on the trace. The shortest trace length I can get is 12-14mm.

This shows that ambient lighting has a significant effect on SCATT accuracy.

This experiment was performed at night with no natural lighting. I will repeat the experiment in the morning with some natural lighting coming through the windows.

What trace length do you get when you do the same?

Guest · Post by **Guest** » Sun Oct 09, 2011 3:28 pm

This has been discussed. Incandescent and halogen lighting can introduce significant artifact. Flourescent lighting works fine.

Dennis L

peterz · Post by **peterz** » Sun Oct 09, 2011 11:21 pm

Depends on how much sleep it got...

GaryD · Post by **GaryD** » Mon Oct 10, 2011 4:32 am

Anonymous wrote:This has been discussed. Incandescent and halogen lighting can introduce significant artifact. Flourescent lighting works fine.

Dennis L

There was a post from Nester showing his set up and I was wondering if it would cause a problem similar to that described above.

http://www.dianaserver.net/rasnoe/shooting/scatt.html

I intend to use the same set up when I manage to get my Scatt system out of its box.
I have had it for nearly 3 weeks now but have not had a chance to use it yet

dlinden · Post by **dlinden** » Mon Oct 10, 2011 9:31 am

There is an additional problem in the photos posted due to the highly reflective surface of the flooring material. The sensor on the barrel will receive a secondary signal bounced from the floor surface. To correct, it is necessary to place a barrier midway between the rifle and the target on the floor. I use a cardboard box that a rifle was packaged in; a few inches high and about 8 inches wide to deflect the bounce. May not be required on carpet. When I did that and changed to flourescent bulbs, all has been ideal.

Dennis l