Is Webley revolver safe for imported cartridges
Posted: Tue Nov 13, 2018 10:27 pm
Friends please tell me that as proof mark of webley b series revolver is 3 tons equal to 6000psi. Can it handle imported Magtech round with 15000psi of pressure?
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ROHITMONA wrote:Friends please tell me that as proof mark of webley b series revolver is 3 tons equal to 6000psi. Can it handle imported Magtech round with 15000psi of pressure?
I would add that it is always safe to use ammunition within the pressure limits for which a firearm if proofed. More so when it comes to older firearms.15000 PSI in a revolver proof rated at 3 tons - 6,000 psi - ESPECIALLY a top break revolver is asking for major trouble.
6,000 PSI is really very low for a .32 S&W Long revolver, unless I am mistaken even the .32 S&W cartridge (often erroneously called the .32 "short" in India) is rated for 9,500 PSI.ROHITMONA wrote:Friends please tell me that as proof mark of webley b series revolver is 3 tons equal to 6000psi. Can it handle imported Magtech round with 15000psi of pressure?
The British Ton = 2240 lbs, so 3 Tons = 6,720 lbs. As Larry said though the gun was proofed to a higher pressure & certified as proofed for 3 Ton pressure loads. The 3 ton reference was also a crusher pressure measurement & not the later PSI as obtained by use of Pieso-Electic crystals which will show a higher pressure than the crusher readings.
The above from: http://www.doublegunshop.com/forums/ubb ... ber=297079Conversion of radial crusher (CUP) to radial transducer (psi) measurement is well approximated by the following relation: psi = 9e-6 *CUP^2 + 0.7051 * CUP. Otherwise expressed as 9 times 10 to the -6 power times CUP. This conversion works well for most modern values of European and American pressure in firearms.....
Also note:
For the modern Piezo equipment ....1 British long ton = 2850 Piezo PSI.....
Therefore THREE (3) Long Tons would be 8550 PSI as measured by the modern Piezo equipment