Having repeated trouble with Winchester Magnum primers. Loaded some 300 WM and had 2 that would not go "Boom" (out of 25 tested). 1 of those did ignite on a second try. 2nd one will not fire.
In the past I had trouble seating these primers by hand, and it led to 1 in 5 not igniting. So I really squeezed on my priming tool this time and tried to get them seated well. Still had these 2 (better, but it is now RARE for me to have a light primer strike). This doesn't happen for my 6.5 loads (Regular Win LRP) and I haven;t had a single light strike in 3k rounds this summer or the two years since I last did Magnum Primers for 300 WM. What are the odds its me (and what can I do to correct it) and what are the odds its the primer.
My stock was started in pandemic when I started reloading, I do have Feds on the Bench, but with a shortage of LRP and Magnum LRP, I just worked with the open box.
In the past I had trouble seating these primers by hand, and it led to 1 in 5 not igniting. So I really squeezed on my priming tool this time and tried to get them seated well. Still had these 2 (better, but it is now RARE for me to have a light primer strike). This doesn't happen for my 6.5 loads (Regular Win LRP) and I haven;t had a single light strike in 3k rounds this summer or the two years since I last did Magnum Primers for 300 WM. What are the odds its me (and what can I do to correct it) and what are the odds its the primer.
My stock was started in pandemic when I started reloading, I do have Feds on the Bench, but with a shortage of LRP and Magnum LRP, I just worked with the open box.