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Old 01-24-2013, 09:15 AM   #11 (permalink)
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The biggest issue I have is they don't seem to have adjusted the velocity for each barrel.
That's the point of the test. You don't adjust so that you can see which barrel length is the most efficient (highest fps). You change only one variable - the barrel.
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Old 01-24-2013, 09:19 AM   #12 (permalink)
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The the test was only an efficiency test correct?
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Old 01-24-2013, 09:39 AM   #13 (permalink)
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The the test was only an efficiency test correct?
Right. Consistency doesn't seem to change with control bore length. Some porting and a large diameter front help a bit. Those are super minor changes.

Bore to paint size effect consistency somewhat.

Since Flasc sells multiple bore sizes and tips - the important factor is control bore length - which is what he tested.

Again, I'm talking paint.
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Old 01-24-2013, 09:43 AM   #14 (permalink)
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Right. Unfortunately as of now we have more questions than answers. There's still the whole pre spin theory of rifled barrels and all that.
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Old 01-24-2013, 10:43 AM   #15 (permalink)
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Right. Unfortunately as of now we have more questions than answers. There's still the whole pre spin theory of rifled barrels and all that.
I wish that show Time Warp was still on. This would have been a good project for them.

How would you test rifled vs non-rifled barrel?

Compare efficiency, distance, accuracy? I have plenty of space to do testing (outdoors unfortunately), I have a smooth bore barrel now with a rifled one on the way very shortly.

If you can write up a test plan I can try to follow it and document it with video footage.
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Old 01-24-2013, 10:50 AM   #16 (permalink)
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I wish that show Time Warp was still on. This would have been a good project for them.

How would you test rifled vs non-rifled barrel?

Compare efficiency, distance, accuracy? I have plenty of space to do testing (outdoors unfortunately), I have a smooth bore barrel now with a rifled one on the way very shortly.

If you can write up a test plan I can try to follow it and document it with video footage.
I'm going to do accuracy and attempt a dual chrono test.

Normally we collect velocity and impact location on an x,y coordiante system then do some math and we have our info. Match chrono speeds between barrels. ranges in the 75-100' are useful. much closer and the differences are tiny. Further and you need a target larger than 4' square to catch the paint.
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Old 01-24-2013, 10:58 AM   #17 (permalink)
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Bryce would you need anything to help your project along. I'm sure if you listed things here many would donate or lend you supplies
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Old 01-24-2013, 11:08 AM   #18 (permalink)
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While we are working on testing has anyone done testing to see how muzzle brakes affect accuracy?
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Old 01-24-2013, 12:23 PM   #19 (permalink)
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Bryce would you need anything to help your project along. I'm sure if you listed things here many would donate or lend you supplies
I think I have everything I need - thanks.

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While we are working on testing has anyone done testing to see how muzzle brakes affect accuracy?
not to my knowledge. The FLASC system would be a good one to try - there are a ton of barrel tips.
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Old 01-24-2013, 01:57 PM   #20 (permalink)
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Here is a wright up from hammer head's web site. They use riffled barrels but they talk fairly in depth about various testing they have done, controle methods, results, ect.

hammerheadpaintball.com - Technical Information

One thing I saw when reading both flasc and hammer head sites is they both attribute different markers to having different results. Above was mentioned how high and low pressure make a difference but also different bolt styles and valve type play a big role in the signature of te pressure wave on the ball.
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