Twist Barells

Mark_Sc

For those who dont know a twist barell has what looks like rifling down the inside of it. The aim isn't to put any sort of spin on the BB but they claim to stop the BB from touching the barell by creating a coushin(spelling?) of air all around the BB. This suposidly gives great groupings and a slight range increase.
But I made this thread for my own benifit so... Who here has experience with or knowlage about twist barells?

I know there's at least one person out there who has tried them but he hasn't been on in quite a while.

SO, any advice? Are they a gimic to be avoided? Or are they the future or acurate airsoft?

Stercus Accidit

There are some good reviews of their effects out there.

I think the idea is there is the same ammount of air all around the bb, preventing it bouncing in side the barrel.

afaik a 6.03 tightbore does the same job, but maybe the twist leaves gaps enough that it would jam as easily with dirt.

Who knows.

liamo333

Dar has one in his mp5.

[--SC(+)PE--]

I did some research about these ages ago Mark when i wanted to get a really good barrel for my Aug and from what i could gather it just seems that everything needs to be absolutely perfectly set up in your AEG, it needs to fire at 328fps constantly etc etc or else the barrel will cause some wicked swerves.
All the comments/reviews etc that i read were completely split on its usefullness, half stating that it has god-like status the other half thinking its a piece of piss. Its less risky to just go with a 6.03 Prometheus barrel but like yourself im forever tempted to get a Hop-twist barrel to try out. Best of luck anyway if ya do get one in the end and report back

ED E

[--SC(+)PE--] wrote: »

I did some research about these ages ago Mark when i wanted to get a really good barrel for my Aug and from what i could gather it just seems that everything needs to be absolutely perfectly set up in your AEG, it needs to fire at 328fps constantly etc etc or else the barrel will cause some wicked swerves.
All the comments/reviews etc that i read were completely split on its usefullness, half stating that it has god-like status the other half thinking its a piece of piss. Its less risky to just go with a 6.03 Prometheus barrel but like yourself im forever tempted to get a Hop-twist barrel to try out. Best of luck anyway if ya do get one in the end and report back

The consistant 328 makes sense. The twist would have to match the speed or it would'nt work. AFAIK the twist on RS guns is slighter with higher velocity rounds as they will get the same spin with the less rifling.

Obtaining consistant fps shouldn't be too hard. My UMP was right on 328 when I bought it but now its a very consistant 323. That should be close enough. Must check how much one would cost for the UMP, wait, what am I thinking, thats already got superb accuracy.

Genghiz Cohen

I don't see how a twist barrel would work with a hop-up, wouldn't the twist counteract the backspin like 90% of the time?

A custom AEG shooting custom bullet shaped BBs with a twist barrel and no hop-up is probably the best way to go, but I've only ever heard of 1 springer/gas sniper that did that and they are extremely rare.

Mark_Sc

Well it's going to be for a VSR... Uncompany dont have any 6.03 ones in stock... but I think I'll end up waiting till they are in...
And can anyone settle this, I've been told vsrs are barell specific and wont take a generic AEG barell, is it true?

Stercus Accidit

Lethal_Bullet wrote: »

The consistant 328 makes sense. The twist would have to match the speed or it would'nt work. AFAIK the twist on RS guns is slighter with higher velocity rounds as they will get the same spin with the less rifling.

Obtaining consistant fps shouldn't be too hard. My UMP was right on 328 when I bought it but now its a very consistant 323. That should be close enough. Must check how much one would cost for the UMP, wait, what am I thinking, thats already got superb accuracy.

But rs rifling is to appy a spin to the bullet to stabilise it like a gyroscope.

These twist barrels dont affect the bb at all, just theoretically create an even amount of air around them.

TBH I cant see how this is any better than a tightbore barrel.

bullets

What I would love is a sub 1j device with rifleing in it that would spin a
non spherical plastic projectile that could be used for safe back yard plinking.

It probably would be useless and not allowed for skirmishing but it
would not not be considered a fire-arm either and be perfect
of target plinking and be safe at the same time.

I thought I read someplace of some experimentation with something like
this in the very early days of airsoft.

~B

Hivemind187

Whoa whoa whoa. You're missing the point a little lads.

Hop-twist isnt rifling. Its grooves cut into the inside of the barrel (a mirror image of rifling) which causes a kind of vortex effect around the bb - a perfect cushion of air to prevent it touching the sides at all (unlike a rs barrel which has a twist in it to spin the round).

It doesnt interfere with the hop-up because it isnt touching the bb, only surrounding it with air. In theory this should have an amazing effect on accuaracy however it requires that the bb enters the barrel on a perfectly straight trajectory in the first place - something that is hard to achieve.

zero19

I wonder if you had say 2-3 inches of tightbore barrel then the remaining length of the barrel was twist would it work better?

Stercus Accidit

Hivemind187 wrote: »

Whoa whoa whoa. You're missing the point a little lads.

Hop-twist isnt rifling. Its grooves cut into the inside of the barrel (a mirror image of rifling) which causes a kind of vortex effect around the bb - a perfect cushion of air to prevent it touching the sides at all (unlike a rs barrel which has a twist in it to spin the round).

It doesnt interfere with the hop-up because it isnt touching the bb, only surrounding it with air. In theory this should have an amazing effect on accuaracy however it requires that the bb enters the barrel on a perfectly straight trajectory in the first place - something that is hard to achieve.

What Ive been trying to say but really badly

ED E

Yeah, get what your saying hive but if you think about it if the air is rotating around dont you think it will too?

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i think the bb's spin alright

Stercus Accidit

[--SC(+)PE--] wrote: »

i think the bb's spin alright

According to tanio koba they don't or shouldn't, thats not the idea behind them.

I dont think they do a damn thing better than a 6.03

Mark_Sc

same price

[--SC(+)PE--]

According to tanio koba they don't or shouldn't, thats not the idea behind them

the air still spins them all right its just that the bb doesnt touch the grooves at all, not 100% sure but im pretty certain thats how they work

Mark_Sc

I think the Idea Isn't to spin them though, that, mixed with the hop, would just cause problems

Masada

personally i think the theory behind them is a load of bull, its designed to make people think, "oh thats what real guns use, it must be good", but if the airflow is spinning then the BB will follow, it is afterall the same air thats propelling the BB in the first place, a tightbore by its very design has the effect that the rifled barrel claims, theres a large volume of air trying to get past the BB and with the smooth barrel the gap (although tiny) is uniform all around the BB so the BB will stay in the middle as the air trys to force its way past.
the rifled barrel to me, seems in theory to do the oposite, at times during the flight of the BB there will be groove in the barrel which will let air past at a higher rate to the oposite side of the barrel in turn pushing the BB to one side.,
just my 2c

Stercus Accidit

vtec wrote: »

personally i think the theory behind them is a load of bull, its designed to make people think, "oh thats what real guns use, it must be good",

Totally agree.

I think people WANT to think a rifled barrel will improve their accuracy, because its a real steel idea, and although any sane person will say its pointless, alot of people would love to find a reason it would be useful, just so they can fit one becuz itz kool.

TBH, I won't waste my money, I'll get a tried and tested smooth tight bore.

Any test I've read where the author saw an effect, seemed to be very much in love with the concept of it working.

Like an 8x scope on an airsoft, you'd love for it to be usefull so you could have one, but its more hassle than its worth over a 1x red dot.

ED E

Motosam wrote: »

Totally agree.

I think people WANT to think a rifled barrel will improve their accuracy, because its a real steel idea, and although any sane person will say its pointless, alot of people would love to find a reason it would be useful, just so they can fit one becuz itz kool.

TBH, I won't waste my money, I'll get a tried and tested smooth tight bore.

Any test I've read where the author saw an effect, seemed to be very much in love with the concept of it working.

Like an 8x scope on an airsoft, you'd love for it to be usefull so you could have one, but its more hassle than its worth over a 1x red dot.

Yeah. If yo wanna waste cash, go ahead, but I'm sticking with my 6.03:D