chief99
Member
Loading 95 gr. 380 copper plated . Bought 500 once fired brass. Noticed that on some of the brass did not feel right when seating the bullet. Some seating to easy without enough neck tension . Loading mixed headstamps. Upon further inspection realized the Winchester, Federal and Speer had the least neck tension. Loading 25 rounds with these 3 brands and 25 with the with the less known brands , which had more neck tension . The other brands which had much more neck tension was so much more accurate than the 3 well known cases. Does this mean that the Winchester , Federal and Speer brasses are thinner . I think mostly it made me realize how important proper neck tension can effect accuracy. Does this make sense ?