A different point of impact?

Double Tapper · January 3rd, 2011, 19:13

Hi guys, I was plinking with my GBBR in the basement,when I decided
put on my RS mock AR silencer.I was shooting at a standard size piece
of paper at 56 feet,and all shots were within the 8" range.

I switched to the silencer and my shots were everywhere,some
even hit the paper, is my silencer creating a vortex or something?

Grrxmaster · January 3rd, 2011, 19:16

My theory:
If the silencer has a different inner diameter than your barrel, it could cause some inaccuracy.

ebfud · January 3rd, 2011, 19:17

is it foam filled or something like that?

Double Tapper · January 3rd, 2011, 19:26

It is a threaded pipe with a solid tube of steel milled to
look like a silencer fastened over the pipe with set screws.

Kos-Mos · January 3rd, 2011, 19:48

The exit hole is not perfectly aligned. Your BBs are hitting it on the way out and thus cause issues.

Double Tapper · January 3rd, 2011, 20:42

As you can see in the first picture,the hole is a fair bit larger.

In this picture,you can see that it is a straight tube.
I'm not sure that the bb can veer off that much in
six inches?

Grrxmaster · January 3rd, 2011, 20:44

Quote:

Originally Posted by Double Tapper

I'm not sure that the bb can veer off that much in
six inches?

You'd be surprised.

Eldin · January 3rd, 2011, 20:57

Quote:

Originally Posted by Double Tapper

Is there a difference in accuracy when shooting in semi vs full auto with the silencer on?

If fully auto is a lot more inaccurate, it's probably because of the bb flying through the gas bouncing around in the tube that was left from the previous shot...

ThunderCactus · January 4th, 2011, 03:19

Semi auto is always more accurate, silencer or not.
Is your hopup adjusted properly?
I made my own silencer, typical airsoft cans have an exit aperture of 10-14mm, my can is 10" long and has an exit aperture of a mere 7.4mm, and I've never chopped a BB on it.
If your hitting the can at 6" it's most likely your hopup, but I've seen defective barrels before.

TokyoSeven · January 4th, 2011, 03:24

I'm gonna toss out a guess and say...difference in weight with the attached silencer is causing a slight bend in your barrel perhaps? Trying to relate the thought I had into words is hard...especially since I just drank a bottle of wine. Quiet sound connecty thing drag down barrel cause shots go crazy pie.

Danke · January 4th, 2011, 04:03

Quote:

Originally Posted by TokyoSeven

I'm gonna toss out a guess and say...difference in weight with the attached silencer is causing a slight bend in your barrel perhaps? Trying to relate the thought I had into words is hard...especially since I just drank a bottle of wine. Quiet sound connecty thing drag down barrel cause shots go crazy pie.

I think you meant to say he has a droopy bananna.

TokyoSeven · January 4th, 2011, 04:05

Oooooh yeah! Go with what Danke said.

Double Tapper · January 4th, 2011, 08:03

?? This is interesting,I guess I'll find a way to clamp the barrel
down,bore sight it with a light mark it and do a test at 1foot
then 5 then 10 to see how much deviation I'm getting.
I'll post the results here.

I forgot to mention that I'm using a INOKATSU all metal with a
steel barrel,so I'm not sure I follow the droopy banana.

L473ncy · January 4th, 2011, 08:32

OK.... Crazy thought here but have you ever heard of engine porting on a car? I've been doing a little reading on this so maybe my understanding is wrong but here it goes anyways.

Basically because the parts don't always 100% perfectly match and line up some turbulence is introduced. So, where does that leave us? If you go along with my theory of engine porting; with the gas propelling the BB out of the barrel maybe when it reaches the suppressor that's when it doesn't line up and turbulence gets introduced into the system, meaning an unpredictable BB.

I guess you'd need a flow bench to really test this, and even then how would you hook things up to test this not to mention you'd need to downscale a flow bench in order to carry out a test like this.

Could it be that the bore isn't consistent and your BB is bouncing around inside the suppressor?

That's really all I can think of at this time.

Double Tapper · January 4th, 2011, 08:42

I do follow what you are saying,that is what I meant when I said
vortex,once the bb leaves the 6.01 barrel and enters the 11.44
barrel of the silencer,I was guessing that have a chance now to
flow in a different pattern and change the coarse of the bb.
Maybe I need to build an insert to bring down the size of my
silencer?

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January 3rd, 2011, 19:13	#1
Double Tapper Trader rating Join Date: Jul 2006 Location: The land of the over regulated and the banners	A different point of impact? Hi guys, I was plinking with my GBBR in the basement,when I decided put on my RS mock AR silencer.I was shooting at a standard size piece of paper at 56 feet,and all shots were within the 8" range. I switched to the silencer and my shots were everywhere,some even hit the paper, is my silencer creating a vortex or something? __________________

January 3rd, 2011, 19:26	#4
Double Tapper Trader rating Join Date: Jul 2006 Location: The land of the over regulated and the banners	It is a threaded pipe with a solid tube of steel milled to look like a silencer fastened over the pipe with set screws. __________________

January 3rd, 2011, 20:42	#6
Double Tapper Trader rating Join Date: Jul 2006 Location: The land of the over regulated and the banners	As you can see in the first picture,the hole is a fair bit larger. In this picture,you can see that it is a straight tube. I'm not sure that the bb can veer off that much in six inches? __________________

January 3rd, 2011, 19:16	#2
Grrxmaster Trader rating Join Date: Dec 2010 Location: P.E.I.	My theory: If the silencer has a different inner diameter than your barrel, it could cause some inaccuracy.

January 4th, 2011, 03:19	#9
ThunderCactus Not Eye Safe, Pretty Boy Maximus on the field take his picture! Trader rating Join Date: Feb 2007	Semi auto is always more accurate, silencer or not. Is your hopup adjusted properly? I made my own silencer, typical airsoft cans have an exit aperture of 10-14mm, my can is 10" long and has an exit aperture of a mere 7.4mm, and I've never chopped a BB on it. If your hitting the can at 6" it's most likely your hopup, but I've seen defective barrels before.

January 4th, 2011, 03:24	#10
TokyoSeven Red Wine & Adderall Trader rating Join Date: Oct 2005 Location: Saskatoon, SK	I'm gonna toss out a guess and say...difference in weight with the attached silencer is causing a slight bend in your barrel perhaps? Trying to relate the thought I had into words is hard...especially since I just drank a bottle of wine. Quiet sound connecty thing drag down barrel cause shots go crazy pie. __________________ "Its only a little bit on fire"

January 4th, 2011, 04:05	#12
TokyoSeven Red Wine & Adderall Trader rating Join Date: Oct 2005 Location: Saskatoon, SK	Oooooh yeah! Go with what Danke said. __________________ "Its only a little bit on fire"

January 4th, 2011, 08:03	#13
Double Tapper Trader rating Join Date: Jul 2006 Location: The land of the over regulated and the banners	?? This is interesting,I guess I'll find a way to clamp the barrel down,bore sight it with a light mark it and do a test at 1foot then 5 then 10 to see how much deviation I'm getting. I'll post the results here. I forgot to mention that I'm using a INOKATSU all metal with a steel barrel,so I'm not sure I follow the droopy banana. __________________ Last edited by Double Tapper; January 4th, 2011 at 08:12..

January 4th, 2011, 08:32	#14
L473ncy Trader rating Join Date: Oct 2004 Location: 11-30-24-1W5	OK.... Crazy thought here but have you ever heard of engine porting on a car? I've been doing a little reading on this so maybe my understanding is wrong but here it goes anyways. Basically because the parts don't always 100% perfectly match and line up some turbulence is introduced. So, where does that leave us? If you go along with my theory of engine porting; with the gas propelling the BB out of the barrel maybe when it reaches the suppressor that's when it doesn't line up and turbulence gets introduced into the system, meaning an unpredictable BB. I guess you'd need a flow bench to really test this, and even then how would you hook things up to test this not to mention you'd need to downscale a flow bench in order to carry out a test like this. Could it be that the bore isn't consistent and your BB is bouncing around inside the suppressor? That's really all I can think of at this time. __________________ ಠ_ಠLess QQ more Pew Pew READY TO >> RACE

January 4th, 2011, 08:42	#15
Double Tapper Trader rating Join Date: Jul 2006 Location: The land of the over regulated and the banners	I do follow what you are saying,that is what I meant when I said vortex,once the bb leaves the 6.01 barrel and enters the 11.44 barrel of the silencer,I was guessing that have a chance now to flow in a different pattern and change the coarse of the bb. Maybe I need to build an insert to bring down the size of my silencer? __________________

A different point of impact?

Airsoft Guns Discussion