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BBMG Spread

This area is for the discussion of BB or airsoft sub machine guns, and or other small arms such as pellets.
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BBMG Spread

Unread postAuthor: clemsonguy1125 » Tue Jun 29, 2010 1:09 pm

On my new BBMG Vortex Cap Rifle the spread is huge, Over 50 feet the bbs spread 10- 15 feet. It was similair on my inline. I use 9/32 brakeline for the barrel and the bbs fit perfectly any ideas why the spreads so big. Im using .12 gram airsoft bbs, but Ive seen plenty of guns with these that dont have this big of spread.
http://www.spudfiles.com/forums/vortex- ... 21277.html
[youtube]http://www.youtube.com/watch?v=QZ9hUXSwN-Y&feature=player_embedded[/youtube]
You can see the spread here, even at close range
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Last edited by clemsonguy1125 on Tue Jun 29, 2010 1:23 pm, edited 1 time in total.
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Unread postAuthor: spudtyrrant » Tue Jun 29, 2010 1:22 pm

9/32 inches = 7.14mm, although it may seem a perfect fit, it is actually around 1mm bigger than the BB, if you want to increase accuracy i would suggest buying a tight-bore air-soft barrel, if you don't want to shell out the cash and get a actual barrel I've heard some carbon fiber hunting arrows have an i.d. of 6.5mm. but they may be difficult to find
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Unread postAuthor: clemsonguy1125 » Tue Jun 29, 2010 1:29 pm

Seriously. 1 mm gap, I never saw that, I bought a carbon fiber arrow but that fit metal 4.5 mm bbs perfectly, I see but this barrels epoxyed in so Im stuck for now I guess
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Unread postAuthor: Gun Freak » Tue Jun 29, 2010 2:02 pm

My barrel is 7.14 mm also, it is brass tube from ace hardware. If our barrels are the exact same then how can yours spread more than mine? How long is your barrel?
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Unread postAuthor: dewey-1 » Tue Jun 29, 2010 2:05 pm

This is from a previous discussion that I had stated.

You could check with a local archery shop and ask for some cut off pieces of different carbon arrow diameters.

One example is PSE Carbon Force 300.
I happen to have one in right in front of me.
Of course this example is 19/64" or .297 inch OD (7.54mm)and .240 inch ID (6.096mm). This is almost exactly what you you want.

You could then put an outer sleeve of brass over it.
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Unread postAuthor: clemsonguy1125 » Tue Jun 29, 2010 3:03 pm

Gun Freak wrote:My barrel is 7.14 mm also, it is brass tube from ace hardware. If our barrels are the exact same then how can yours spread more than mine? How long is your barrel?

30 inches
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Unread postAuthor: Gun Freak » Tue Jun 29, 2010 3:07 pm

Lol Mine is about the same length... I bought about 3 feet of it and then chopped 6 inches off.
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Unread postAuthor: clemsonguy1125 » Tue Jun 29, 2010 3:09 pm

Id say they were different feeding mechs but i used the same barrel in my inline, what about a spread test, then we can see, how bout .12 gram bbs at a cardboard target from 30 feet at 100 psi
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Unread postAuthor: Gun Freak » Tue Jun 29, 2010 3:18 pm

Good, I'll tell you when I did it.
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Unread postAuthor: clemsonguy1125 » Tue Jun 29, 2010 3:19 pm

You use the crossman camo .12 grams, dont you I test it later today or tomorrow
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Unread postAuthor: Gun Freak » Tue Jun 29, 2010 3:21 pm

Yeah that's what I have, I'll do the testing soon.
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Unread postAuthor: clemsonguy1125 » Tue Jun 29, 2010 3:23 pm

Cool, just post pics here
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Unread postAuthor: Gun Freak » Tue Jun 29, 2010 3:28 pm

I'll do a vid.
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Unread postAuthor: clemsonguy1125 » Tue Jun 29, 2010 4:00 pm

100 rounds from 50 feet, shooting ended early cause my barrel came unepoxied
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Unread postAuthor: Gun Freak » Tue Jun 29, 2010 4:02 pm

I thought you said 30, oh well I'll back up a little. Did you do 100 psi, my dad's still on the phone too.
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