A full aperture unseamed can end having a vent test rating of at least 90 psi comprising a center panel (24) having an periphery and including a coined portion proximate a rivet (30), a first score (26) defining a removable panel (34), a tab (32), including a nose (31), mounted to the removable panel (34), and a second score (40) disposed on the removable panel, the second score having (i) a central portion (42) spaced apart from the coined portion; (ii) a pair of check slots (45a, 45b) disposed on either side of the central portion; (iii) a pair of lateral portions that extend from the check slots; and (iv) a pair of side portions (50a, 50b) that extend from the lateral portions, respectively.