Olga Jablonska, Dorota Juchno, Anna Leska, Karolina Kowalewska, Alicja Boroń. Summary: Caspase-3 immunoexpression in testes of Cobitis taenia and natural tetraploid Cobitis hybrids provides new insights into the reproductive physiology of polyploid fishes, underlining the role of apoptosis during spermatogenesis. Abstract. 1 (100%) 50 yard zero is the best. If you dont have access to a 50, you can zero 1.2 inches low at 25 yards, which will be dead on at 50. This chart is for a 14.5" barrel but Im gonna guess that its not gonna be that much different at these ranges for a 16". Last edited by ForTehNguyen; 05-16-10 at 21:24.