Barrel Length vs Accuracy
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- čas přidán 21. 09. 2021
- All tests are conducted in a controlled environment. None of the test models are homemade, 3D-printed, or previously modified guns. This time we look at different barrel lengths to see which gives us the best accuracy.
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"...this is really just a high-end spit-wad shooter. " OK, I can trust this guy...
He's not wrong...
This video is the most in-depth and thorough I've seen so far regarding. Fantastic content and very useful information. Thank you a lot for taking the time of filming your experiments and sharing your results. Please continue making videos like this :)
In Japan, We use short and loose inner barrels (over 6.10mm) and long surface hop up to avoid BBs bouncing inside of inner barrels. That’s the best way to increase accuracy under our strict regulations.
So sad that airsoft was originally from Japan. Imagine holding an airsoft gun with no metal part, that's an awful feeling.
I noticed that recently that all marui's new guns both AEG and GBB rifles only have inner barrel lengths between 25 - 36cm even if they have a longer outer barrel.
I was playing with the hop up in my stock Cyma m14 tonight. The barrel is something like 550mm and I'm running .32g and was shooting at 50m. I can definitely confirm, less hop definitely leads to better accuracy with long barrels.
Good factor control test.
i would love to see different ammo tested like this, i have a feeling inconsistency in center mass of the BB from manufacturing may be whats causing the random drift of shots
I can honestly say that results were surprising for me. Good video, thank you for that.
Another great vid with simple explanations and demonstrations! Love your 100% candour! Thanks so much for being curious and sharing!
Thanks! Great video! This was exactly what I was looking for.
Good demo!
Interesting stuff! Love it. Im staying tuned
BB wieght has been the best way for me to get accurate shots within the effective range of that particular replica I'm messing with for that day. Good demo. 👍
What bb weight you are using for longer range accuracy?
@@elelnoel5196 .4
Very helpful. Thanks for making this video.
Excellent video. Respect
Need better compression out of the piston in the gear box once the barrel gets to a certain length, otherwise you lose power or acceleration. Other wise, despite what the airsoft community's typically believes, I also believe a longer barrel means slightly better accuracy but even better range.
sure becaues for longer barrel you need bigger cylinder volume = more air pushing the bb = more range. Or at least thats my reasoning. Ofc, is the range increase that big to justify longer and harder to handle weapon? Thats for each plaayer to decide
Cracking video, fantastic
I've been checking out outdoor shotgun options. I had a has jag before and loved it. Ended up trading it though haha Now I'm looking to get another and wondering if barrel lenght is worth looking at with gas shotguns.
the stray shots going off target are probably from improper bucking mounting or the barrel turning if its not held by a c clip resulting in it turning the bucking inside a little or it could also be barrel imperfections both inside in the bore and in the machining that the bucking goes inside of
ive done quite a bit of research lately and also had barrels move in one of my guns
great video, thank you.
Yes, interesting results, thanks for the video
Ideally you want half hop up and half barrel to keep spin so less wind effect to bbs, if it’s all barrel it’s more affected by wind.
10 shot groups huh? You really are a real firearm shooter. One of the main reasons I play Airsoft is to train on a platform very similar to my real AR15. Good video new Sub.
great video, thank You for this kind of content👍
thank you for you explanation and hardworking into this video
Biggest problem here is the Cylinder to Barrel Volume Ratio. You have to adjusted that by changing the Barrel length to get good results. Barrel too short and too much Volume, then you have bad accuracy because of uncontrolled pushing the bb after leaving the barrel. Volume too low for a too long barrel and the gun runs out of breath before the bb leaves the barrel, leading to uncontrolled bouncing of the bb inside the barrel. In this case, the gun is way more inaccurate with hop than without hop, because a hopped bb is waaay more in controllable if it bounces inside the barrel then a bb without hop.
But he didn't change the cylinder type in the gearbox when he swapped barrels did he ? The problem is in air volume.
you got so , so much other stuff going on. the alignment makes so much difference
When you have shots that are over hopping then some under hopping that's a sign something is wrong with the hopup arm-nub-bucking and barrel window postion. The nub may not be pressing on the bucking patch the correct way. It may be off centered left-right or forward and backwards.
Yes interesting and in relation to accuracy not running any hop will give better accuracy as it removes one variable out of the equation, I've had the same results, however without hop range is so badly affected that for use outdoors it's something that you have to have. I know airsoft pistol shooters trying to get maximum accuracy tend to run no hop up but targets are never really more than 15m away. Good to see the results you got. Again because airsoft guns are so inaccurate I tend to shoot no less than 10 shoots in a group and average it out. Keep up the good work.
Nice work
Interesting results, but did you adjust the volume of air for each barrel length?
You obviously didn’t listen to what he was saying Mr Expert, where’s YOUR videos?
He did, he lower the air pressure on the longer barrel so the muzzle velocity stay the same at 380fps
Started playing this year. Not much can be done really but i like discovering new things. Maybe one fix is to evolce into more tic tac shaped rounds soneday.
Im thinking if getting a small air pump and thin tubing, drilling pin holes in a sealed barrel-front and connecting the tobes to the holes. Im thinking that what if tgere was a pump pulling all the air and oressure out from in front of the bb in the barrel? Worth a look...
very helpfull thanks
Excellent Vid. I was going to buy a Bullpup thinking it would be more accurate at distance...........Turns out it's probably more to do with the Hop Up set up?
However, I'm still confused at your results so I'll watch it again. :D Thanks.
The hop-up bucking also acts to hold the BB at the correct position at the entrance of the barrel, so reducing it or turning it off completely actually introduces inconsistencies in the positioning of the BB at time of firing.
Thankyou
Does anyone know the model of the bench vise? Or something similar? All I can find is the ones to repair the gun.
Is fairly hard to have consistency, mainly because the projectile. Cut few bb in half and see the distribution of air pockets inside bb itself. I have done same experiment as this video but only 2 barrel: 310 and 450, both on vsr 10 g speak. But I am more interested for consistency of path of flight and long range , rather then grouping. I do not seek a headshot at 70 or 80 m or maybe at 90 or 100, in airsoft hiting the body is enough. Rare I seek the small target, in range of 50m to 60 m, when the target is hiding and maybe picking from behind cover. Then is crucial to have small area groups. My result, with extreme upgrades, maple leaf 70° , and EdGi 6.00 , bull-barrel. Aside vibration from piston should, that are send in to the system , the bb is the biggest unknown from the equation. Nice video
What's the best length for ar15 dmr? What's the best setup for it and which gear ratio would be the optimal?
Very Cool
Hi, next time try higher velocity (420-450 fps) and same barrel / hopup sets. Maby 0.36g+ bb's. Great vid btw 👍
I'm sorry 6 inch group at 50ft. I expect that at 150ft😊
I'm learning, It is the same with choosing barrel lengths and ammo for firearms. Thanks for the intell.. My Crosman Stinger with Colt .20g shot is more accurate than a Colt Mustang Pocketlite .380 with 95 grain Federal Hydroshok hollow points...
It seems like the random wild shot is never the first shot in my experience
You should have keep the air pressure the same instead of trying to adjust the same fps for all 3 barrels, this will make the test more fair. Same fps means you have reduce the air pressure when testing the longer barrels, this may leave the BB which less air cushion while travelling down a longer barrel, which leads to inconsistencies.
My understanding is when length is increased FPS goes up. When you went up in barrel length did you keep the FPS the same for each length accounting for the length?
Longer barrel = more FPS, need to compensate for FPS… It is up to certain point though, when cilinder gets to small. Harder to test, but important. Also use a more accurate replica: I suggest The scorpion EVO (sub machine gun version)
Edit: scorpion evo shoots like a laser, 1.2J and 0.28gr bb it is like a laser, 60mtr range easy
I used to play paintball and my new asg cz scorpion was not very accurate nor did it shoot as far as my pump paintball marker I ran. It was more like well used tippmann98 rental.
First set of groupings all look roughly the same to me
Sadly the additional variable you induced, by changing the Air behavior.
The reason the longer barrel didnt work is because of isaac newton's law plus air loss. That is.. longer barrel means more compression from the piston or longer stroke to compensate the pressure needed to leave the barrel. Or maybe a wider piston tho that would mean a complete customization for certain BB. Also how much back spin is lost as it travels out the longer barrel and Air loss as the BB is not a tight fit through the barrel. Its like arguing can i get my 1750 Musket to shoot accurately.. well no as it was the brass bullet shell casing that makes bullets accurate 999.9 % and changed guns forever from paper cartridges aswell as rifled barrels... think Airsoft then think Muskets and pistol
Awesome content 👍, I shoot real firearms and am also used to their accuracy. I can only shoot bbs in my yard in the city so i went with airsoft for home plinking and accuracy isnt great. If you can continue the search for better accuracy Ill keep watching.
I have one question. . . . What is hop-up ?
hop unit is a device that applies adjustable pressure to the bucking. The bucking is a rubber tube like thing that protrudes in to the breech end of the barrel, how much is set by the hop unit. The overall effect is to give the bb some back spin, this creates lift (magnus effect) and thus extends the range dramatically
On their defense 6in group at 50ft is pretty bad. 😅
Doesn’t longer length barrel equal lower fps?
In AEGs changing barrel length can change the FPS if your cylinder volume doesn't correctly match your barrel volume. So for a longer barrel you need a larger cylinder so you're not under-voluming. In this case he's using a HPA system so he can control the volume of air and therefore the FPS. Also in Gas blow back systems a longer barrel increased FPS as it gives more time for the gas to expand increasing the time the BB has to accelerate.
The most accurate length would be 1 inch barrel, shot from a pointblank range
I always see in youtube ,always test airsoft in term of accuracy ,range ,fps,, is always at single shot,, or semi ,, pls hope next vids ,, try to use full auto shot,, thanks
Great video as always but such inconsistency suggests the hop-up system isn't performing properly
agreed
yes
I'd say the nozzle alignment was off
Also, you shouldn't be using a 50 degree bucking at 380 fps.
At 380, you should be using a 60-70.
Ah man, this confused me even more....
As expected, long barrel doesn't give any benefits. Thanks for research!
There’s a cut off point for improvements/loss. It certainly is better than the very short barrel - but not better than the very long barrel right?
@@SwitchUpYt Yes. The most efficient way to increase accuracy is to use soft hop up bucking (maple leaf MR HOP 2021) for better spin with appropriate hop up nub (maple leaf omega) and heavy BBs.
Increasing barrel length and using tight barrel can lead to negative results.
Some people say that the quality of inner surface matters more then barrel length or inner diameter. I think it doesn't matter that much. The most important part of the barrel is a cut for hop up bucking. Bigger cut allows to use buckings with bigger patches which leads to more consistent spin -> longer range and better accuracy.
@@kord2003 Ah ok - I had wondered about maple leaf - I’ve heard very good things. Why don’t manufacturers fit that as standard? Cost?
@@SwitchUpYt Most manufacturers don't care about range and accuracy because it's hard to measure so it won't sell a gun. Also there are so many myths in airsoft! Even experienced airsoft techs doing stupid builds, like installing expensive aluminium parts and precision barrels but putting purple prometheus or green G&G because "it was good back in the days" but now it's total shit comparing to modern hop up buckings.
Looking for an airsoft that are accurate to hit squirrels that are eating my mangoes?
You failed to talk about BB weight in regards to this test.
Why isn't my .2g 6mm Cal. airsoft gun as accurate as my BCM 14.5" AR with match grade ammo????