Back on topic, Texas actually had very little brass-cased ammo aboard, historically, only the 1.1 inch and 40mm Bofors ammo (some of the 20mm ammo was steel cased, some brass). Both the 5"50 and 14"45 guns used bagged charges, and that was all through Texas' life.
In August 1945, the USS Texas (BB-35) was fitted with the following armaments:
5 ea - Mk 3, Mod 14, 14"/45 two gun turrets
6 ea - Mk 13, Mod 6, 5"/51 single pedestal mounts
10 ea - Mk 22, Mod 4, 3"/50 single pedestal mounts
7 ea - Mk 2, Mod 14, 40mm AA Quadruple Mounts
3 ea - Mk 2 Mod 18, 40mm AA Quadruple Mounts
44 ea - Mk 10 Mod 23, 20mm AA single mounts
2 ea - Mk 4, Mod 3, Main Battery Gun Directors
2 ea - Mk 6, Mod 7, 5" Gun Directors
10 ea - Mk 51, Mod 2, AA Gun Director
2 ea - Mk 50, Mod 4, 3" Gun Directors
4 ea - Mk 51, Mod 3, 3" Gun Directors
1 ea - Mk 21, Mod 4, Stable Vertical Directors
2 ea - Mk 3, Mod 2, Main Battery Radar set
1 ea - Mk 8, Mod 3 Main Battery Radar set
2 ea - Mk 10, Mod 5, 3'"or 5" DP Radar set
The 20mm used 3 types of case, the Mark 2 and 4 were brass, the Mark 3 was steel.
The 40mm also used 3 types of case, the Mark 1 and 2 were brass, the Mark 3 was steel.
The 3"/50, Mk 22, used 4 types of cases, the Mark 3, Mod 0, Mark 3, Mod 2, and Mark 7 were brass, the Mark 9 was steel.
Only the 14"/45 and 5"/51, were bag guns, a majority of the ammunition would have been cased ammunition.
The 5"/51s were in casemates at the base of the forward tripod mast.
The 3"/50s were in open tubs, three above the 5" casemates, and two aft abeam the after super firing 14" turret