Developed in the late 1960s the most common method of accurately measuring chamber pressure is the Piezo method. It is similar to the copper crusher method where a hole is drilled into the chamber, but rather than a copper slug a quartz crystal transducer is inserted and attached to
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Aug 29, 2015 · Okay, so it has been my dream for several years now to own and shoot rifles in several German calibers that I consider "timeless" 8x57IS, 7x64 (which, at least searching the usual suspects, doesn''t seem all that more rare than its closest "American" cartridge 280 Remington, and with a faster twist rate, to boot), and 9.3x62. I don''t even know why, I''ve just always wanted them.
Feb 19, 2011 · There are similar differences in government and SAAMI gages in the radial copper method, the government barrel using a drilled case and .225x.400 size "C" copper with no gascheck between the piston and the cartridge case, whereas SAAMI procedure used a more sensitive .225x.500 copper and a wax filled gascheck sandwiched between the piston
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Jan 14, 2017 · Yes. I think that''s why SAAMI has the transducer sample a position just below the case shoulder (0.175" and 0.15" below shoulder for large and small transducers, respectively), where the brass is still close to the same thickness as the neck, whereas copper crusher ports are further back, closer to the middle of the case wall.
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Mar 01, 2017 · Here''s a reality they''re the same case, chambered in the same rifles, so both can be loaded, regardless of what SAAMI might say, to the same pressure. SAAMI claims the 33806 can be loaded to 63kpsi, while the 3006 only to 60kpsi. The Whelen they list to 62kpsi, and 270win to 65kpsi
Miscellaneous Questions #11. This section contains brief discussions of various ballistics and shooting related topics as requested by correspondents. If you have a question you have been trying to find an answer to (keep ''em ballistics and shooting relatedsee your minister for the mysteries of life) email me by clicking here and I''ll do my best to find the answer for you and if it is of
copper crusher cyliindrical size 4x6mm . Saami Size B Copper Crusher lecappuccino.be copper crusher cyliindrical size 4x6mm,Jun 22, 2014· The SAAMI copper crusher configuration gives much higher magnitude results than the SAAMI Piezo transducer system does, even when the same lot of reference ammunition is fired in both.copper crusher cyliindrical size 4x6mm copper crusher
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Apr 05, 2019 · The British Ton is 2240 lbs, so that''s 41,440 psi. I thought the Mk VII ammunition was rated at 19.5 tons per sq in (46,680 psi). SAAMI specs show 49,000 psi for the .303 British. Is this because of the different methods of measuring pressures (piezo vs copper crusher, etc.)? What am I doing wrong here?
Oct 13, 2014 · The first, going by SAAMI diagrams, is that the position of the crusher gauge port varies with cartridge. From testing tank guns and artillery, the pressure within the chamber varies with the chamber geometry and distance from the base. In general, the nearer the base, the higher the recorded pressure nears the true peak pressure.
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Feb 26, 2019 · But if you apply it to the SAAMI copper crusher number for .223, which is 52,000 CUP, you get 60,930 psi, which is not very close to the the SAAMI conformal transducer MAP of just 55,000 psi. He considers it an insturmentation problem in the article. Overall, there are a number of instrumentation anomalies involved.
saami size b copper crusher auspices of the Sporting Arms and Ammunition Manufacturers The copper crusher is a conventional ballistic test device . copper crusher crusher tisshoo. copper crusher pressure gauge manufacturers While there are now more accurate methods of measuring chamber pressure the copper Copper Crusher Ammo Grinding Mill .
Piezo (PSI) and strain gauge (PSI) are not directly relatable to copper crusher (CUP) due to the differences in the sensitivity of the copper crusher versus the other methods used to measure the pressure. However, new statistical data analysis suggests that for most cartridges ANSI/SAAMI Maximum Average Piezo (PSI) and Maximum Average copper crusher (CUP) taken in a "standard"
Jan 18, 2016 · I guess I don''t understand the piston, as the transducer is in direct contact with the cartridge using either the SAAMI or CIP systems. Pistons are only used with lead or copper crusher systems. Looking at the numbers I would say that possibly the conversion is a bit off? Or the system used was a lead crusher.
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Dec 11, 2011 · Pressure, or CUP. Both SAAMI and CIP used the copper crusher method until the advent of inexpensive, reliable piezoelectric strain gauges, at which point, both organizations converted their methodologies to take advantage of the newer technology. The copper crusher method was the standard for small arms pressure measurements since the late 1800s.
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At SAAMI they run from 11 ksi for the 10 ga to 12.5 ksi for the .410 in the standard case lengths, but a few of the longest shotshells are as high as 14 ksi. References. ANSI/SAAMI document Z299.41992 is the principle source for the SAAMI crusher and piezo ratings listed here a scanned copy can be found on the SAAMI site. The ratings listed
The deformed length of the crusher is measured and compared to a calibrated conversion table provided by different techniques: using a copper crusher and using both C.I.P. and SAAMI type piezoelectric pressure . with A, B, C, n and m the material parameters to determine, and a reference strain rate (chosen as 1 s1).
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