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ThunderCactus · December 11th, 2013, 18:04

FYI the twist barrel is not a magical item lol
It doesn't improve your range any more than a widebore would
How it functions is it just provides channels for more air to help center the BB, it does NOT induce any sort of rifle spin to the BB.
The amount of axial spin generated by the hop up acts like a gyro on the BB, making it extremely difficult to induce spin in a different direction.
And if rifle spin WERE induced on the BB, you would see it veer off to the side all the time near the end of it's flight path.

You're actually better off using a widebore or tightbore, I personally recommend the 6.08 or 6.05, and using heavier BBs.
The actual bore and length of the barrel is inconsequential. All barrel bores (within a range, of course) will produce the same accuracy, but the tighter bores will lose accuracy faster due to fouling. It's been my experience with my VSR-10 that after just 120 rounds the 6.03 barrel lost a noticeable amount of consistency.

Now you're very close in saying that velocity is secondary to accuracy. What actually determines the maximum range and accuracy you can have is the weight of your ammo.
Heavier rounds have a higher maximum range and accuracy than lighter rounds.
But of course you need the muzzle energy to get them out there.
So all BB's optimally end up being at a relative speed of 320-350fps.
The more you increase your muzzle energy, the heavier the ammo you should be using, but the relative speed of the BB typically stays at 320-350fps.

Issues occur when you're at high fps with too light a round. Either the round loses it's momentum too quickly (lighter rounds lose momentum faster than heavy rounds) and destabilizes, or you're actually sending it out so far that it's hop up spin destabilizes causing it to veer off in a random direction before gravity is able to pull it to the ground.

With my VSR-10 I found that at 430fps, .30g BBs worked just perfectly. But bumping it up to 470fps, the .30s would flay out at the end of their flight path.
So generally just use .30s up to 440fps, and .36s beyond that.

So pick an fps, and just get 3 different weights of ammo and compare those to get your best performance.
You just want to see which BB's will go the furthest without flaying before they hit the ground. Ammo that is TOO heavy will reduce your range.

December 11th, 2013, 18:04	#13
ThunderCactus Not Eye Safe, Pretty Boy Maximus on the field take his picture! Trader rating Join Date: Feb 2007	FYI the twist barrel is not a magical item lol It doesn't improve your range any more than a widebore would How it functions is it just provides channels for more air to help center the BB, it does NOT induce any sort of rifle spin to the BB. The amount of axial spin generated by the hop up acts like a gyro on the BB, making it extremely difficult to induce spin in a different direction. And if rifle spin WERE induced on the BB, you would see it veer off to the side all the time near the end of it's flight path. You're actually better off using a widebore or tightbore, I personally recommend the 6.08 or 6.05, and using heavier BBs. The actual bore and length of the barrel is inconsequential. All barrel bores (within a range, of course) will produce the same accuracy, but the tighter bores will lose accuracy faster due to fouling. It's been my experience with my VSR-10 that after just 120 rounds the 6.03 barrel lost a noticeable amount of consistency. Now you're very close in saying that velocity is secondary to accuracy. What actually determines the maximum range and accuracy you can have is the weight of your ammo. Heavier rounds have a higher maximum range and accuracy than lighter rounds. But of course you need the muzzle energy to get them out there. So all BB's optimally end up being at a relative speed of 320-350fps. The more you increase your muzzle energy, the heavier the ammo you should be using, but the relative speed of the BB typically stays at 320-350fps. Issues occur when you're at high fps with too light a round. Either the round loses it's momentum too quickly (lighter rounds lose momentum faster than heavy rounds) and destabilizes, or you're actually sending it out so far that it's hop up spin destabilizes causing it to veer off in a random direction before gravity is able to pull it to the ground. With my VSR-10 I found that at 430fps, .30g BBs worked just perfectly. But bumping it up to 470fps, the .30s would flay out at the end of their flight path. So generally just use .30s up to 440fps, and .36s beyond that. So pick an fps, and just get 3 different weights of ammo and compare those to get your best performance. You just want to see which BB's will go the furthest without flaying before they hit the ground. Ammo that is TOO heavy will reduce your range.