Here's my problem, I'm lazy! I use two Dillon 550b presses and typical loads will involve W296/H110 -- thus I fill the 550b primer tube with CCI 350 magnum primers. When I get ready to use powders such as 2400, Unique, or even faster stuff like Red Dot, titegroup, Clay, etc., I don't take the extra time required to empty the primer tube and reinstall std. primers. The question is, does the use of magnum primers with powders not requiring their use affect the accuracy of the load? I realize I can use WLP primers that "supposedly" are made for use with all levels of powder -- but I've always been suspicious that all the WLP is is a magnum primer that you use for all powders? Anyway, can anyone reference testing that indicates you "should not" or "has a negative impact" if magnum primers are used across the board?
Dan
Dan