FPS question

[Tactical Church]

So here is a discussion question.

You have two M4 rifles. One VFC and the other G&G.

Both full metal bodies that cost different prices. G&G 300$ VFC 460$

Both have the same inner barrel length yet different FPS. G&G 370-390
VFC 360-370

Here is the question. Can there be very much difference in how far these guns shoot?

Btw both are completely stock exept i put the same 6.01 tightbore barrel in each and the VFC has a brand new and improved hop up unit.

and i own both so im not asking which to buy. i just am asking to hear your thoughts

[Cap n pickles]

If your G&G is having an FPS difference of 20 between BBs, you should get it checked out.

I would not imagine that you could really see the difference. Does one seem to shoot father than the other? Have you tested differen't BBs?

[Merchant]

Yes, there can be drastic differences. A rifle's range is not really determined by the FPS-which is a common misconception. FPS is the force you are putting on the bb, but if you have ever fired a rifle that has the hop up off, or a poor hop up you will notice the bb may only go 60 feet even though the rifle is firing 350fps.

I had a Tokyo Marui P90 that shot 280 or so out of the box, but it was able to keep up with AEG's that were shooting well over 300 because TM always has a phenomenal hop up.

Why a higher FPS may be desired is for two reasons:

1. People feel it more when they are hit
2. You can use a heavier bb, which means greater accuracy

Basically if you are looking to up your range, a high quality TBB and a good hop up rubber combined with good quality bb's will give you what you are looking for.

[Tactical Church]

I was just giving a safe range because i am not completly certain the exact fps of the G&G. Well what i do know is the G&G seems to have a faster rate of fire than the other. And it does seem the VFC gets a little better difference. But i wasnt sure if i was just being biased because i love the looks of the VFC more than the G&G

[Jester316]

Range is a product of a variety of things.

Compression: Compression can be measured in 3 key places. The cylinder head, the nozzle, and the barrel.

Hop up: Both the quality of the hop up unit and bucking, and their fit to the barrel will affect the range.

FPS: This plays a little bit less of a role. There are many instances of where a lower FPS gun can still outrange a higher FPS gun because of the above factors.

Barrel: Tighter the barrel bore, the better (as long as it's a good quality made barrel out of a good material).

[Tactical Church]

So i was told that if my rifle is shooting around 160 ft then i should be happy and not worry about it. is that true for an automatic M4 rifle?

[Jester316]

Most airsoft engagements are 100' or less. So you'll be fine.

[Tactical Church]

OK awesome. I just hate those buggers who sit out on the castle wall and can hit me when i try so hard to shoot them but with no luck. haha

[KA-BAR]

then a sniper comes along and ruins yer day from 200+ feet away.




LOL

[Tactical Church]

yep. those snipers get me every time. haha

[Darius137]

Last CAG training we had a 400fps AEG, a 460fps DMR and a 280fps LPEG all in a line shooting at Eudorus.

They all had roughly the same range. Kind of the same time to hit the target, as well. It surprised me.

They were all ranging about 250ft.

[Nec]

According to the Airsoft Trajectory Project.
The gun that has the highest Joules to BB weight ratio (Energy (in joules) = 1/2 mass * velocity^2) will go further. Now this is with the hop-up OFF, once you turn it on many more factors go into play. Of those factors a few of them can not be expressed through mathematical fiquring.

The best way to find out is to buy yourself a range finder (I have this one) and measure it yourself.

[Jewish Ninja]

Range is a product of a variety of things.

Compression: Compression can be measured in 3 key places. The cylinder head, the nozzle, and the barrel.

Hop up: Both the quality of the hop up unit and bucking, and their fit to the barrel will affect the range.

FPS: This plays a little bit less of a role. There are many instances of where a lower FPS gun can still outrange a higher FPS gun because of the above factors.

Barrel: Tighter the barrel bore, the better (as long as it's a good quality made barrel out of a good material).

You left out ammo. Using quality BBs with the above will also improve your accuracy and range. BBs with centered air bubbles won't go flying off at random directions since their center of gravity is constant instead of going all over the place.

[Private Mack D.]

So, let me get this straight, the heavier the bullet, the better the accuracy of the gun is, but the FPS becomes lower, and if you use lighter bullets you get less accuracy, but more FPS.

Is that how it is?

[Juicemachine]

So, let me get this straight, the heavier the bullet, the better the accuracy of the gun is, but the FPS becomes lower, and if you use lighter bullets you get less accuracy, but more FPS.

Is that how it is?

It's not quite that simple.

When fired from the same gun, a heavier and a lighter BB will each have equivalent muzzle energy, as the gun is firing them both with the same amount of energy.

With a heavier BB you'll get better accuracy, because it will be less affected by wind and other environmental conditions. It will also carry it's energy for longer, i.e. it will be felt more at longer distances than the lighter BB.

The lighter BB will travel slightly faster, but unless you're worried about whoever you're shooting at dodging your rounds.


Sorry to Off Topic, OP.