Need some help estimating range.

CDN_Stalker · January 3rd, 2011, 00:59

Ya, it is. I typically just run it full hop up (screws out) and go for the heaviest ammo I can get a flat trajectory out of. Guarder clear rubber, set on stun, 0.36g Bastards flying out at around 300fps seems to be my magic combination.

ThunderCactus · January 3rd, 2011, 03:21

The 650mm barrel will reduce your accuracy, 610 is the max efficient barrel on the standard cylinders, you need a bore up for 650
AND, I can personally attest to the fact that a 430mm barrel and 650mm barrel have absolutely ZERO freaking difference in range or accuracy.
As long as the bore is consistent, it's a good barrel no matter what length it is.

highny · January 3rd, 2011, 03:56

Quote:

Originally Posted by CDN_Stalker

I typically just run it full hop up (screws out) and go for the heaviest ammo I can get a flat trajectory out of.

That actually a really great idea! I would love to give that a try next time I'm out on a field.

Quote:

Originally Posted by ThunderCactus

you need a bore up for 650

I didn't know they made a special cylinder for bolt action. I always thought that only affects AEGs, not BA... Damn... Anyone want a 650mm AEG barrel? haha.....

Oh boy! All these tips are a real eye opener! Thanks a lot!

CDN_Stalker · January 3rd, 2011, 12:32

Quote:

Originally Posted by highny

That actually a really great idea! I would love to give that a try next time I'm out on a field.

I didn't know they made a special cylinder for bolt action. I always thought that only affects AEGs, not BA... Damn... Anyone want a 650mm AEG barrel? haha.....

Oh boy! All these tips are a real eye opener! Thanks a lot!

It affects anything that has a cylinder, piston and barrel. A no brainer actually

Gas is unaffected though.

highny · January 3rd, 2011, 17:07

CRAP! So that means I won't be able to use that 650mm inner barrel! Gees, there goes $80...

CDN_Stalker · January 3rd, 2011, 17:15

Quote:

Originally Posted by highny

CRAP! So that means I won't be able to use that 650mm inner barrel! Gees, there goes $80...

Spend another $8 and you can recover your $80 investment.

http://www.canadiantire.ca/AST/brows....jsp?locale=en

BTW, what rifle platform did you buy anyways? I seem to recall the CA M24, but has been a while. If so, cut it down to 515mm and you are golden.

highny · January 3rd, 2011, 17:27

Quote:

Originally Posted by CDN_Stalker

Spend another $8 and you can recover your $80 investment.

http://www.canadiantire.ca/AST/brows....jsp?locale=en

BTW, what rifle platform did you buy anyways? I seem to recall the CA M24, but has been a while. If so, cut it down to 515mm and you are golden.

I'm running a Well L96. I was told that the cylinder to inner barrel length only effects AEG as BA don't have full auto there won't be any air draw back(forgot the proper term) before the BB is out of the inner barrel.

L473ncy · January 3rd, 2011, 17:48

I think the term you're looking for is "Barrel suck effect". Think about it though, there's only so much air the piston can push the BB so you're not really using the piston effectively if it's not a bore up (at least in theory/my mind). Remember, there's no replacement for displacement. It doesn't only work for car engines it works for anything with a piston, a 1.3 Litre I4 engine probably will never get as much power as a 3.0 Litre I6 (that is unless a shitload of things are done to it like porting, balancing, breathing mods, stage 3 turbo, etc. but even then.....).

Also if you decide to cut the barrel I believe you have to do something special with it, I forget the name of it but basically it involves jamming in a "cone" shaped thing into the end of the cut side of the barrel to make sure that the tube hasn't bent in on itself.

Eldin · January 3rd, 2011, 19:19

Quote:

Originally Posted by L473ncy

Also if you decide to cut the barrel I believe you have to do something special with it, I forget the name of it but basically it involves jamming in a "cone" shaped thing into the end of the cut side of the barrel to make sure that the tube hasn't bent in on itself.

It's called "crowning"

ThunderCactus · January 3rd, 2011, 19:39

Countersinking or deburring is preferable

CDN_Stalker · January 3rd, 2011, 19:51

Barrel suck involves any projectile moving down a barrel propelled by air. It involves the lower amount of air from the cylinder not being able to equal or excede the volume of the barrel. So it doesn't matter if it's one shot per minute or 800, barrel suck occurs due to the barrel volume being much higher than the cylinder volume. It doesn't come from the piston moving backwards, it comes from the vacuum created when air volume behind a moving BB excedes available air volume from the cylinder.

And yes, deburring, crowning, etc. needs to be done on the barrel if you cut it, you can put the hop up end into a drill to spin it and use a small fine file or large drill bit to do it cleanly.

Grudge · January 12th, 2011, 16:20

To the OP: I was looking for these after you asked your question and was finally able to find it:

http://www.vendian.org/mncharity/dir3/anglechart/

http://www.vendian.org/mncharity/dir3/anglecard/

hope they help. Second link is the better of the two.

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January 3rd, 2011, 00:59	#16
CDN_Stalker Official ASC Bladesmith Trader rating Join Date: Jul 2003 Location: Ottawa, Ont.	Ya, it is. I typically just run it full hop up (screws out) and go for the heaviest ammo I can get a flat trajectory out of. Guarder clear rubber, set on stun, 0.36g Bastards flying out at around 300fps seems to be my magic combination. __________________ STKR Knives http://www.facebook.com/#!/pages/STK...17036668380871

January 3rd, 2011, 17:48	#23
L473ncy Trader rating Join Date: Oct 2004 Location: 11-30-24-1W5	I think the term you're looking for is "Barrel suck effect". Think about it though, there's only so much air the piston can push the BB so you're not really using the piston effectively if it's not a bore up (at least in theory/my mind). Remember, there's no replacement for displacement. It doesn't only work for car engines it works for anything with a piston, a 1.3 Litre I4 engine probably will never get as much power as a 3.0 Litre I6 (that is unless a shitload of things are done to it like porting, balancing, breathing mods, stage 3 turbo, etc. but even then.....). Also if you decide to cut the barrel I believe you have to do something special with it, I forget the name of it but basically it involves jamming in a "cone" shaped thing into the end of the cut side of the barrel to make sure that the tube hasn't bent in on itself. __________________ ಠ_ಠLess QQ more Pew Pew READY TO >> RACE Last edited by L473ncy; January 3rd, 2011 at 17:51..

January 3rd, 2011, 19:51	#26
CDN_Stalker Official ASC Bladesmith Trader rating Join Date: Jul 2003 Location: Ottawa, Ont.	Barrel suck involves any projectile moving down a barrel propelled by air. It involves the lower amount of air from the cylinder not being able to equal or excede the volume of the barrel. So it doesn't matter if it's one shot per minute or 800, barrel suck occurs due to the barrel volume being much higher than the cylinder volume. It doesn't come from the piston moving backwards, it comes from the vacuum created when air volume behind a moving BB excedes available air volume from the cylinder. And yes, deburring, crowning, etc. needs to be done on the barrel if you cut it, you can put the hop up end into a drill to spin it and use a small fine file or large drill bit to do it cleanly. __________________ STKR Knives http://www.facebook.com/#!/pages/STK...17036668380871 Last edited by CDN_Stalker; January 3rd, 2011 at 19:54..

January 3rd, 2011, 03:21	#17
ThunderCactus Not Eye Safe, Pretty Boy Maximus on the field take his picture! Trader rating Join Date: Feb 2007	The 650mm barrel will reduce your accuracy, 610 is the max efficient barrel on the standard cylinders, you need a bore up for 650 AND, I can personally attest to the fact that a 430mm barrel and 650mm barrel have absolutely ZERO freaking difference in range or accuracy. As long as the bore is consistent, it's a good barrel no matter what length it is.

January 3rd, 2011, 17:07	#20
highny Trader rating Join Date: Jul 2009 Location: Calgary	CRAP! So that means I won't be able to use that 650mm inner barrel! Gees, there goes $80...

January 3rd, 2011, 19:39	#25
ThunderCactus Not Eye Safe, Pretty Boy Maximus on the field take his picture! Trader rating Join Date: Feb 2007	Countersinking or deburring is preferable

January 12th, 2011, 16:20	#27
Grudge multitech Trader rating Join Date: Jul 2008 Location: with your girlfriend, playing with her P90.	To the OP: I was looking for these after you asked your question and was finally able to find it: http://www.vendian.org/mncharity/dir3/anglechart/ http://www.vendian.org/mncharity/dir3/anglecard/ hope they help. Second link is the better of the two. __________________ Nothing says loving, like a head shot!

Need some help estimating range.

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