Links to popular troubleshooting and tuning topics:
Adjusting a regulated PCP and relationship between hammer spring and pressure
Barrel troubleshooting and accurizing for the DIYer and an example
Barrel crowning - brass screw method
Barrel machining
Barrel machining - reamer selection for leade
Bore lapping and example lapping fixture
Bore lapping versus polishing and fire lapping versus cast lap
O-ring material and durometer considerations
Regulator creep, contributing factors, and how to deal with it
Re-sealing a Huma style regulator
Regulator recovery time and related troubleshooting
Regulator recovery time - factors influencing it
Regulator pressure changing with the reservoir pressure
Regulator spring stacking
Scope installation - mirror method
Scope installation - sources of error arising from relying on levels or wedges
Adjusting a regulated PCP and relationship between hammer spring and pressure
Barrel troubleshooting and accurizing for the DIYer and an example
Barrel crowning - brass screw method
Barrel machining
Barrel machining - reamer selection for leade
Bore lapping and example lapping fixture
Bore lapping versus polishing and fire lapping versus cast lap
O-ring material and durometer considerations
Regulator creep, contributing factors, and how to deal with it
Re-sealing a Huma style regulator
Regulator recovery time and related troubleshooting
Regulator recovery time - factors influencing it
Regulator pressure changing with the reservoir pressure
Regulator spring stacking
Scope installation - mirror method
Scope installation - sources of error arising from relying on levels or wedges