Proof Testing New Barrels

O

opsoff1

New member
Question for the masses - for those that are threading/chambering/fitting custom barrels - does anyone actual "proof test" their barrels? Is it worth developing an overpressure load to do this?

TIA
 
We do, but we have actual USGI proof loads. We also have pressure test barrels and universal receivers to confirm the pressures of the loads. Dont try to create a proof load without proper test equipment to verify the load. We blew out a gage last week when the load hit 90,000psi on an experimental load. Most actions are designed for 60,000psi to 65,000psi loads on a daily basis. Our gages are only rated for 80,000psi.
 
MilGunsmith said:
We do, but we have actual USGI proof loads. We also have pressure test barrels and universal receivers to confirm the pressures of the loads. Dont try to create a proof load without proper test equipment to verify the load. We blew out a gage last week when the load hit 90,000psi on an experimental load. Most actions are designed for 60,000psi to 65,000psi loads on a daily basis. Our gages are only rated for 80,000psi.
Click to expand...

Better never test a PPC ;)
 
alinwa said:
Better never test a PPC ;)
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We are currently upgrading to gages rated for 100,000psi. The new .277 SIG rounds are at the max range of the older gages. I have to go back and recut the old M10x1.0 gage ports to M12x1.0
 
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Gauge Blow Up...

MilGunsmith said:
We do, but we have actual USGI proof loads. We also have pressure test barrels and universal receivers to confirm the pressures of the loads. Dont try to create a proof load without proper test equipment to verify the load. We blew out a gage last week when the load hit 90,000psi on an experimental load. Most actions are designed for 60,000psi to 65,000psi loads on a daily basis. Our gages are only rated for 80,000psi.
Click to expand...

How do you know you hit 90,000 if gauge blew...???
 
guesstimate - gauge rated to 80 + a safety factor so possibly could have been over 90 - just my take.
 
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