I'm loading for the first time Barnes 36gr Varmit Grenades in a 22-250 using Varget powder. The Barnes manual calls for a Federal GM210M rifle primer in a Winchester Case. Is this a Magnum primer?
All I have is Winchester Large rifle primers would it be safe to use them instead?
Also whats the difference between Large and Magnum rifle primers?
Anyone else shot Barnes Varmit Grenades? I've always used Hornady V-max for the 22-250 in the past.
Thanks