THE BASIC PRINCIPLES OF IMR GUNPOWDER RELOADING DATA

I will fall again a few grains and operate up and find out what takes place .I have and use alot of the 2400.Received 2 of your previous Enfields Number one MKIII's and want to try out it in them also,haven't loaded for them yet but beeing a rifle bored out to 410ga it'd be which i could bump them up a bit far more,a normal 410 shotshell wont healt