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Does Smaller Gas Bushing Increase Bullet Velocity?

This is a discussion on Does Smaller Gas Bushing Increase Bullet Velocity? within the Ruger Semi-Auto forums, part of the Rifle & Shotgun Forum category; Has anyone compared bullet velocity with a chrono with stock bushing compared with smaller bushing in a Mini-30 Tactical? Has anyone seen either a change ...


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Old January 7th, 2017, 09:27 AM   #1
 
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Does Smaller Gas Bushing Increase Bullet Velocity?

Has anyone compared bullet velocity with a chrono with stock bushing compared with smaller bushing in a Mini-30 Tactical?

Has anyone seen either a change in accuracy or a change of point of impact related to smaller bushings?

Thanks!



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Old January 7th, 2017, 01:03 PM   #2
 
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Old January 7th, 2017, 05:33 PM   #3
 
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The bleed off of gas from the bushing is very small, besides the bullet is out the barrel before the powder gas diverted from through the bushing blows back the op-rod.
So while I haven't chrono'd different bushings, I would bet money you'd never notice a difference.
You won't notice a change in accuracy between bushings, but the process of taking your gas block apart, changing the bushing, and putting your gas block back together, will show a different point of impact, unless you are very lucky and get the exact same torque on the gas block screws and exact same gap between the halves of the gas block. I usually need to re zero after changing bushings.

Last edited by sandog; January 7th, 2017 at 05:38 PM.
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Old January 7th, 2017, 05:36 PM   #4
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Concur. Like comparing 9,900 angels on the head of a pin versus 10,000, I suspect.
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Old January 8th, 2017, 05:37 AM   #5
 
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Thanks for the replies. Much appreciated.
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Old January 8th, 2017, 10:43 AM   #6
 
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Theoretically, yes. In reality, as pointed out above the change is likely in the noise level.

Could cause a problem with function, possibly. Smaller bushing means less energy available to work the action.
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