May I ask what your source (Oct 2007) is for your statement that Battery D, 1st Ill fired 72 of the 620 shots fired by the Union artillery in the Battle of Raymond?
A source I just found, which seems very reliable, states they fired 20 rounds.
I'm not disagreeing with you, just interested in the correct number.
My source agrees on 620 as the total of rounds fired.
Art