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i currently have a PDI 6.01 430mm inner barrel with 4 barrel spacers in my VSR,

is it worth the $150 dollars to buy a new PDI 6.01 554mm barrel in terms of accuracy? will i notice a increase of accuracy????
 

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As far as the physics are concerned, it will only get you a higher fps. It shouldn't get you more accuracy. I will let someone else explain why (*cough* Cheese *cough*) because my explanation is pretty rocky and I probably won't get the whole thing. So unless you ae looking for maximum fps, it's not worth it.
 

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Don't get it! basically, the 430mm inner barrel is pretty perfect in terms of cylinder volume for VSRs. I ordered a PDI outer barrel and they sent me the 690mm version which is for the 554mm inner barrels, but I'm keeping my 430mm inner barrel inside it.

A huge mistake people make in airsoft is thinking that the longer the barrel the more accuracy you will have, it isn't true. I've seen pistols out-range assault rifles! ;)
 

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I read somewhere that the best barrel length (for maximum power, accuracy will be the same) for a vsr-10 cylinder is 500-510mm, assuming you have good compression. So, that 554mm barrel won't give you much of a power advantage. Accuracy will be the same, if not slightly worse because the piston will hit the cylinder head before the BB will exit the barrel.. i guess you could get a bore-up kit with that 554mm in order to maximize power efficiency with heavier springs/bb's, but even then there's only a small advantage in fps. And with fps limits, why spend the money? I'd rather save the money for far more important upgrades.
 
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