Aguila Blanca
Staff
Remember that any (and all) published load specifications are properly valid only for the exact components, fired through the test gun or barrel, at the temperature and humidity prevailing at the time of the test.
Do minor variations from any of those parameters really matter? "Probably" not, but they may. This is why we are always advised to start at the starting load and test a few rounds, then work up in charge weight while watching for signs of problems. Starting with Lehigh's own data for Lehigh bullets is a good idea, but IMHO you shouldn't just load up a couple of hundred of them and hand them to your friend without first testing a couple of them in the gun or guns in which they will be used.
Do minor variations from any of those parameters really matter? "Probably" not, but they may. This is why we are always advised to start at the starting load and test a few rounds, then work up in charge weight while watching for signs of problems. Starting with Lehigh's own data for Lehigh bullets is a good idea, but IMHO you shouldn't just load up a couple of hundred of them and hand them to your friend without first testing a couple of them in the gun or guns in which they will be used.