What I will say in QuickLoads favor is for people who have pressure test data for their load from a pressure test breech, you can then go input the values and use the program to determine relatively accurate models of what happens when you change seating depth, assuming your chamber is a mirror of the pressure test breech chamber.
If you input multiple test breech data points and built a set of brackets for various real-world pressure values, you can make the program useful for predicting actual chamber pressures.
If you are just loading based off of what it recommends, contrary to the warnings of the developers, you have no way of knowing what your actual chamber pressures are, which then steers you back to checking your specifics against published data from powder and bullet manufacturers, who have actually invested in pressure test breeches, calibrated them, and then recording strings of readings to get reasonably-safety numbers for their combinations.
If you talk with ballistics engineers at any of the big name companies, they will tell you that this process is ongoing, always chasing the tail of the tiger. They chuckle at some of the things they see online, especially the few people who have purchased pressure trace equipment and immediately started uploading their results online, without even calibrating the apparatus with known test loads, gauge equipment validation, gauge placement accuracy, and all the things that are entailed with building a pressure test breech.
If you input multiple test breech data points and built a set of brackets for various real-world pressure values, you can make the program useful for predicting actual chamber pressures.
If you are just loading based off of what it recommends, contrary to the warnings of the developers, you have no way of knowing what your actual chamber pressures are, which then steers you back to checking your specifics against published data from powder and bullet manufacturers, who have actually invested in pressure test breeches, calibrated them, and then recording strings of readings to get reasonably-safety numbers for their combinations.
If you talk with ballistics engineers at any of the big name companies, they will tell you that this process is ongoing, always chasing the tail of the tiger. They chuckle at some of the things they see online, especially the few people who have purchased pressure trace equipment and immediately started uploading their results online, without even calibrating the apparatus with known test loads, gauge equipment validation, gauge placement accuracy, and all the things that are entailed with building a pressure test breech.
NRA Basic, Pistol, Rifle, Shotgun, RSO
CCW, CQM, DM, Long Range Rifle Instructor
6.5 Grendel Reloading Handbooks & chamber brushes can be found here:
www.AR15buildbox.com
CCW, CQM, DM, Long Range Rifle Instructor
6.5 Grendel Reloading Handbooks & chamber brushes can be found here:
www.AR15buildbox.com