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Discussion Starter · #1 ·
I had the opportunity to test out the barrel/cylinder ratio and it did not end as expected.
First i tested the 430mm 6,01mm barrel and the results were awesome.
Longer range with heavier bbs and accuracy was also on point.
I cut it down on the milling machine and carved the end so there was no room for error. Every time i cut it for a 1 cm and i stopped when i reached 360mm so 6cm down.
the more i went down the more the range went down, 1cm was like 5m
At first I could hit a 90m+ target and now i cant reach the 70m mark without aiming higher. I did this because i have a spare barrel so I didn't lose anything so if someone out there is thinking about buying a shorter barrel because of the ratio and you have a good range now dont bother you will maybe even lose range. (I have tested this with 0.5g 0.48g 0.43g so if you are using lighter bbs this may not be true)
I also got the chance to test out the FPS and it went down but the confusing part is that players on the field said that they can swear that the rifle hits harder and it hurts more. :shrug:
 

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Here are the best cylinder to barrel ratios
0.3gm bb use a 554mm barrel (15821 mm^3) = 2.26:1
0.32gm bb use a 530mm barrel (15136 mm^3) = 2.36:1
0.36gm bb use a 500mm barrel (14279 mm^3) = 2.51:1
0.4gm bb use a 470mm barrel (13422 mm^3) = 2.67:1
0.43gm bb use a 430mm barrel (12279 mm^3) = 2.92:1
0.45gm bb use a 400mm Barrel (11423 mm^3) = 3.13:1
0.48gm bb use a 370mm barrel
This is a guideline but it is pretty good.
 

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If your FPS was dropping as you cut the barrel down of course you are going to lose range. Barrel length does not affect range, energy level does. The point of optimizing your cylinder to barrel ratio in airsoft is to reduce the strength of spring needed to achieve a particular power level with a particular bb weight.
 
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