Nielsen changed the base design of their .30 slugs this summer around the time of their move. I have confirmed this on at least the 47.2, 49.5 and 54.5 gr. Pics here: https://www.airgunnation.com/topic/nsa-design-change/
Old design has a bump in the center and has thicker base edges. New design the bump is gone, and base edges are thinner. I see a lot of deformities in the new base edges.
Has anyone had good luck with the new base design? So far myself and the OP in that other thread (both shooting Impacts), accuracy went from good to poor with the change. Although speeds for me are similar between the two designs, I went from about 1MOA to 2.5-3MOA, and had same results at different speeds and reg pressures. I want to hear how this change is working out for others who were already shooting the old design with success.
Old design has a bump in the center and has thicker base edges. New design the bump is gone, and base edges are thinner. I see a lot of deformities in the new base edges.
Has anyone had good luck with the new base design? So far myself and the OP in that other thread (both shooting Impacts), accuracy went from good to poor with the change. Although speeds for me are similar between the two designs, I went from about 1MOA to 2.5-3MOA, and had same results at different speeds and reg pressures. I want to hear how this change is working out for others who were already shooting the old design with success.
