I’ll refrain from vivid details of my 209 primer use . Just suffice to say I’ve used Federal 209A , WIN 209 , CCI 209 , Cheddite 209 , Remington 209P and Remington STS 209’s in the recent months . I keep CCI 209M’s but they aren’t used in regular run of the mill field or target loads . To be honest the 209M’s were initially purchased for use in an inline ML .