Pressure loads

Michael rivers · 01-09-2021, 09:34 PM

Hi guys I want to know if there is any evidence on breaking loads on barrels instead of just saying you can’t use modern loads or you will lose your face.
Is there actual evidence of pressure testing on a Parker barrels when they were made stating that there needs to be let’s say a 5 to 1 working pressure ratio?
As with Remington it is 55000 psi breaking load

Dean Romig · 01-09-2021, 09:53 PM

Yes there certainly is evidence. You don’t get to be one of the most highly respected gunmakers in the the country, or even the world, if you didn’t have standards.
Every Parker made came with patterning tags with powder and shot load data including specific measurements. Anyone who chose to use greater loads than those specified on the tags did so at their own peril... to life and limb... or digits.

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Michael rivers · 01-09-2021, 10:04 PM

Ok great! Do you know where I can get the breaking loads ?
Thanks mike

Michael rivers · 01-09-2021, 10:13 PM

Need the breaking loads for a titanic barrel?

Dean Romig · 01-09-2021, 10:17 PM

There is no “one size fits all” formula. Each bore size and frame size had its own recommended load. In fact you could almost say that each gun was different, even though they weren’t, but “The Parker Story” certainly explains it a lot better than I can.

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Michael rivers · 01-09-2021, 10:22 PM

Ok so there isn’t a breaking load chart for a 12g.
I thought this information would be easily accessible due to safety

Woodcock survey · 01-09-2021, 10:27 PM

Please explain what you mean by breaking load. Do you mean proof load, or one that will definitely blow the gun up. I am confused in that i have never heard the term.

Michael rivers · 01-09-2021, 10:34 PM

Sorry I mean what pressure rating did the Parker barrels fail? Then you can determine what low pressure is.

Cameron Thraen · 01-09-2021, 10:50 PM

Read 'Finding out for myself' series of articles by Sherman Bell published in The Double Gun Journal. Excellent work reported on proof loads and gun failure. You will be surprised at the pressure required to cause failure.

Mike of the Mountain · 01-10-2021, 12:12 PM

Quote:

Originally Posted by Cameron Thraen

Read 'Finding out for myself' series of articles by Sherman Bell published in The Double Gun Journal. Excellent work reported on proof loads and gun failure. You will be surprised at the pressure required to cause failure.

Cameron, if I remember correctly, Sherman Bell used modern proof loads to test those guns, and there were a lot of guns. I remember he had some movement between the hook and hinge pins but no barrels let go. Some of those guns surprised him that they held up as well as they did. Great series of articles.