AJ Posted March 31, 2006 Report Share Posted March 31, 2006 Which of these cartridges have the highest maximum average pressure (PSI) recommended? Which has the lowest maximum average pressure (PSI) recommended? a. .30-06 Springfield b. .243 Winchester c. 7mm Remington Magnum d. .270 Winchester e. .223 Remington Quote Link to comment Share on other sites More sharing options...
Canadian_Goose Posted March 31, 2006 Report Share Posted March 31, 2006 Re: Cartridge Quiz 7mm and .223.... I have no idea you got me Quote Link to comment Share on other sites More sharing options...
Huntr104 Posted April 1, 2006 Report Share Posted April 1, 2006 Re: Cartridge Quiz I'm guessing but here it goes. Highest .223 and lowest .30-06 Quote Link to comment Share on other sites More sharing options...
LifeNRA Posted April 3, 2006 Report Share Posted April 3, 2006 Re: Cartridge Quiz 7mm Highest .223 Lowest Just guessing! Quote Link to comment Share on other sites More sharing options...
Shaun_300 Posted April 3, 2006 Report Share Posted April 3, 2006 Re: Cartridge Quiz .270 is highest, .223 is lowest. Quote Link to comment Share on other sites More sharing options...
terry264 Posted April 3, 2006 Report Share Posted April 3, 2006 Re: Cartridge Quiz .270=highest .243=lowest????????? Quote Link to comment Share on other sites More sharing options...
AJ Posted April 3, 2006 Author Report Share Posted April 3, 2006 Re: Cartridge Quiz Shaun has the correct answer! Good job! .30-06 Springfield - 60,000 .243 Winchester - 60,000 7mm Remington Magnum - 61,000 .270 Winchester - 65,000 .223 Remington - 55,000 This was done to show that you can't determine the maximum recommended pressure of a given cartridge by looking at its diameter, velocity, or case capacity. These numbers are the maximum average peak pressure. Pressures fluctuate up and down in each gun depending on temperature. Higher temperature gives higher pressure. If you develop a load that is max in 20 deg weather in the winter then want to use it on a groundhog in the summer heat well into the 90 deg range, you will exceed pressures. This can be anywhere from flattening primers and sticky extraction to blowing primers, case head separation, etc. Quote Link to comment Share on other sites More sharing options...
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