Hello, my dad picked me up some primers this week. My IMR reloading data calls for Federal Premium Primers (PN - GM215M) and he got me the non-premium ones (PN - 215). These are for a 300 WTB Mag.
Can someone tell me what the difference is between the two and if I can use the non-premium primers for my 300 WBY Mag?
PN - 215:
http://www.midwayusa.com/eproductpag...eitemid=586171
PN - GM215M:
http://www.midwayusa.com/eproductpag...eitemid=184351
Thanks!!!