Bullpup DMR AEG?

Fired from the same gun, heavier BBs get to the target faster. They carry their momentum better, while light BBs slow down quickly.

 
I plink quite a lot, having the space to do so as I look out onto fields so no neighbours. But it's quite windy and I've noticed that .20s are so carried by the slightest breeze that it can be a complete lottery, so hence my thinking that if I could fire something over .25s at the same speed I should get more accuracy.

I guess my dream was to accurately fire over .30 without people actually dodging the BBs like they're Neo in The Matrix!


Heavier BBs get there faster...

http://mackila.com/airsoft/atp/

 
This is fascinating, thank you Hangtight so many variables there, more than Real Steels in fact. One for the General Airsoft folder, phew, I should have paid more attention to the physics master at school!

But basically a normal site limit of about 1 joule might get a .30 or heavier out to up to 60-70 yards?

Whatever else I need to get a chromo, then I need to pay some real attention to matching hop up to BB weight as I get the impression that those foremost factors in airsoft range.

I still wonder if a longer barrel would the best way of launching .30s or heavier up to 100m?

And I can't think of a better use of space than a bullpup, that and the fact that if I get something like an AUG then i can easily whip the barrel off and change hops myself.

But am longer so sure about the DMR thing, from what I'm reading here I get the impression that fps, like long barrel length is not one of those foremost factors.

That being so, it comes down to: What is the optimum barrel length for the UK site limit of 330fps? And what is the optimum BB weight and hop for that? 

 
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The only way to get a BB out to 100mm is if it's got the mass to maintain linear momentum and rotational energy in order to keep creating lift. Once it's velocity through the air drops below a certain level it just can't generate lift, regardless of the amount of backspin it retains. This is why heavy BBs get to their maximum range and then seem to just 'drop' out of the air after following a fairly flat flight.

As far as barrel length goes, here's  my take on it. Once the BB leaves the barrel ,the configuration of the gun has no effect on its flight. It has been given a velocity, an amount of backspin and a direction. How that was achieved can no longer influence what happens next.

I have a CQB gun with a barrel length of 170mm and a couple of others with barrel lengths up to 363mm. Firing the same weight BB (0.28g) at a fraction under 1.14J there really isn't anything to choose between them in terms of range, with the most accurate AEG I own having a barrel length of 300mm, but this could be down to the fact that it's the highest quality.

 
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