Maybe I can say it a little nicer than stick. Every lot of primers, cases, and powder are a little different. Not counting the rifle chambers they are tested in. So reloading manuals give you a place to start that should be safe in your particular rifle.
There are several manufacturers of a powder in the 4350 burning range. They are all a little different. Then there is the lot to lot difference. Hasbeen
A
A lot nicer Mike
