That depends on what your technique is.
We talking sand bags on a nice bench? Iron sights? or off hand standing on your head
IMHO - if it's iron sights with sandbags - that looks about right for Wolfe ammo.
Others have reccomended it - but the first upgrade you should do is a trigger job - without doing that it'd be like having a hot rod with little tiny wheels - or a killer stereo system with cruddy little speaks....you get the idea.
I took 2 classes too many of statistics in college and am pretty good on excel -
How tricky is it to set up that chart?