Thread: Pressure Variations and Load Data

Greetings,
Yes there is quite a bit of variation in data and some CIP pressures are way above SAAMI for European cartridges especially the military ones. There are pressure measuring set ups available. These used to have a strain gauge fixed to the barrel under the chamber but may have changed. The thing that was missing was the reference ammo needed to calibrate the set up and guarantee accuracy. The old maxim of garbage in equals garbage out applies. I almost exclusively use ADI powders and I would imagine the only data available for that comes from the US. It does not help when the speed of a powder is changed without notice as happened with AR2209 and likely may have happened with BM8208. Some of the data I have looked at is old like 1960's old and still offered without any warning. Data for the likes of the .30-40 Krag and .303 Brit are highly variable depending on the rifle they were worked up in. Once I get my A into G I should have some Krag loads to report.
Regards Grandpamac.