Actually you don't have a problem. I checked in that oob and the experience of those batteries isn't all that great. Wyatt's is 4 which equates to Volunteer, Graham's is 5 which equates to Seasoned, Ward's is only 1 which equates to Conscript and Brooke is 3 which equates to Militia, accuracy for any of these batteries would be poor at best. Highest experience they can have is 9 which equates to EliteVeteran.Got the figures of this quick test which lasted about 25 minutes of game time.
Mac Map, Div-Div combat, Attack. OOB Brig-Div Day 1, CSA Side (Pender)
Artillery units
Wyatt: 0
Graham: 0
Ward: 0
Brooke: -39 (One gun routed)
Total score 1415 (I won routing USA easily).
So that's about it, I checked every arty unit performance in the OOB in the debriefing screen and I can confirm in 20 minutes (5 to get to firing position) they shot constantly but killed 0. All guns were set to shoot on the infantry and despite several targets being blocked, the guns shot from the beginning to the end of the engagement, killing 0 as I said.
Houston we have a problem.
(By the way, the prtscn function doesn't work so it looks like I'm gonna have to use Fraps so next time I'll show you the SS regarding what I say) to post SS
What does all this mean?
Wyatt is equipped with 12 lb howitzers. With their experience level under optimum conditions firing a 10 shot group at 100 yds, the diameter of that group would be approx. 12.6 yds. The size of the group would increase as the range increases. The best battery you had was Grahams armed with 12 lb Napoleon's. With their Seasoned experience their group at 100 yds would be approx. 4.7 yds in diameter, again increase the range and increase the size of the group diameter. Poor Ward's group is approx. 8.1 yds in diameter and Brooke's is 6.4 yds. You may wonder where the data to calculate this came from, the NSSA cannon target tests were used for them plus extensive research from the historical records. If there had been any rifled cannon the accuracy would have been much greater. If Graham for example had 3 in Ordance rifles instead of the 12 lb Napoleon's, the group would have been approx. 2.33 yds at a range of 100 yds.