The American 14-inch 45 caliber guns as seen on Texas, Nevada, and Arizona fire the Mk.9 HC shell and Mk.8 AP shell. This would be fine if all these ships were in their original configurations, but in the 1930s they were all modernized to include larger chambers for increased muzzle velocity. additionally, the Pennsylvania and Nevada class battleships had their turrets modified to increase their maximum elevation, and were supplied with new AP and HE shells. The New York class was also given new shells, but one with a different windscreen design, as the older projectile hoists could not handle the increased length. However, Texas and New York later had their projectile hoists modified in February 1944 in order to accommodate the longer shells, bringing them up to standard.
So the Nevada in game should instead have the AP Mk.16 and HC Mk.19 shells, identical to those for the 14"/50 guns as seen on Mississippi and Tennessee, although with a decreased velocity of 792 m/s for the AP and 834 m/s for the HC. Arizona should still get the AP Mk.16, but because the HC Mk.19 was not available until 1942, she should keep her HC Mk.9 shells.