By Mike 8-{>
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The inner barrel OD is a very lose fit in the breech block. This allows the barrel to move around a lot when it is pulled back when the trigger is pulled. This leads to shot to shot inconsistency and innacuracy.
Photo Information for KJW MK1 Ruger NBB 9 Breech with inner barrel fitted to show the size of the clearance.
Taken with Canon Canon PowerShot A710 IS
- 8.3 mm
- 1/80
- f f/3.5
- ISO 800
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