when opening/starting with a new lot number of the same number powder I begin at the starting load. Many years ago I found the starting load for H4895 to be a more than max load in my 30/06, rare, but it does happen. William
And that is why i buy my powder in 8lbs canisters for most of my favorite loads. And if not that can of powder is for one firearm.
For the message of the Cross is foolishness to those who are perishing, But to us who are being saved, It Is The Power Of God. 1Corinthians 1-18