Another suggestion...never load rounds when you are unsure about the safety factor. I'm assuming you loaded rounds then at a later point weighed the charge being thrown by the Lee measure? Always verify charge weights of powder measures. Never assume they are correct. Even when they have been verified and appear to be consistent, continue to monitor the weights with a scale every 5 to 10 charges to be certain that no adjustments have to be made. You can never be too careful when handloading ammunition. Always remember that you are essentially creating bombs that ignite in a machine sending a projectile downrange at blistering speeds. It is a science that has been tested and verified by the powder and bullet manufacturer's to provide users with information that will keep them safe. If you deviate from the provided information in manuals by undercharging or overcharging the case, you do so at your own peril. Always play it safe
Ask as many questions as you can before performing any reloading tasks. Or get an experienced mentor if someone is available to help you. Nobody knows it all, but most experienced handloaders will be able to keep you loading ammo safely and that is whats most important.
Would also advise against using a powder measure when developing test loads. I weigh each test round on a scale to make sure the charge weights are exactly the same. Once an accurate load is found, then I may use a powder measure to mass produce the ammunition.
