Abstract The set of geometrically based slip-systems hardening inequalities introduced in Havner [Havner, K.S., 2005. Philos. Mag. 85, 2861–2894] is applied to the analysis and prediction of experimental response of fcc crystals in the singular ‘Goss’ orientation of the channel die test – loading direction (1 1 0), lateral constraint direction ( 1 ¯ 1 0 ) . In addition, perspectives from my previous analyses of (1 1 0) channel die compression (2007–10) are presented and relationships between hardening moduli and compressive stress–strain curves evaluated for aluminum and copper in each lattice-orientation range. In the Goss orientation and for all orientation ranges in (1 1 0) compression, theoretical results for active slip planes, principal slip-rates, lattice rotation or stability, and finite crystal shearing are fully consistent with the gross-scale, finite-deformation experimental response of aluminum and copper crystals.