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Old 09-04-2011, 01:31 AM   #1 (permalink)
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Shot pattern with full auto

SHOT PATTERN WITH FULL AUTO

I am wondering if the shot spread with a bt delta elite is due to the pressure being different shot to shot while firing full auto (inconsistent velocitys).

I am getting about 1 1/2' spread at about 70 feet.
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Old 09-04-2011, 01:47 AM   #2 (permalink)
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It probably has more to do with the difference from paintball to paintball than it does the amount of air pressure pushing each paintball out the barrel
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Old 09-04-2011, 02:10 AM   #3 (permalink)
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Remember, the spherical paintball is probably the worst projectile made by man. An 18" pattern is considered fairly good at 70 feet. I've seen better, but I've also shot worse (dirty barrel, and/or really, really crappy paint). The spherical shape tends to cause an effect known as vortex shedding.
Vortex shedding - Wikipedia, the free encyclopedia

These vortexes pull the ball in random directions.

Now on one of the testing videos out there on youtube they showed how a 10 fps change in velocity can change the point of impact by about a foot at 100 feet (if I remember correctly). So if your pattern tends to be a vertical oval then you may be experiencing excessive velocity fluctuation, so getting more consistent velocity could theoretically tighten up the pattern a bit. If your pattern is more circular then your velocity isn't an issue.
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Old 09-04-2011, 08:21 PM   #4 (permalink)
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I am guessing a spread-out pattern is good .......like a shotgun.

I used the same barrel last week in semi and it seemed more accurate (a ceramic "14 barrel)
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Old 09-04-2011, 09:06 PM   #5 (permalink)
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The accuracy difference is all in your head.
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Old 09-05-2011, 12:56 AM   #6 (permalink)
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The accuracy difference is all in your head.
Actually the oppositions paintballs were all on my head.
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Old 09-05-2011, 10:00 AM   #7 (permalink)
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Originally Posted by bond commander bond View Post
I am guessing a spread-out pattern is good .......like a shotgun.

I used the same barrel last week in semi and it seemed more accurate (a ceramic "14 barrel)
Spray and pray!
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Old 09-05-2011, 10:32 AM   #8 (permalink)
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If you are running it stock then chances are it has more to do with regulator fluctuations than anything barrel related, seeing as you just have your tank reg/no secondary regulation.
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Old 09-06-2011, 08:56 AM   #9 (permalink)
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So if your pattern tends to be a vertical oval then you may be experiencing excessive velocity fluctuation, .... If your pattern is more circular then your velocity isn't an issue.
This.
You'll have to shoot a lot to really see this effect though, unless your velocity is really bad, 100's of balls, with a steady platform, vice or at least leaning on a bench
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