. Suppose this may depend on whose dies you are using. I have trimmed the majority of my reformed Grendel brass after necking down. Then I am using Whidden bushing die or the Mighty armory full length sizing die.
As I recall I had similar issues when sizing 17 fireball. in that case the brass had been annealed prior to forming. when I broke away from annealing B4 initial forming the crushed cases went away. I know this is contrary to Dinno suggestion above. Something to experiment with I suppose.
As I recall I had similar issues when sizing 17 fireball. in that case the brass had been annealed prior to forming. when I broke away from annealing B4 initial forming the crushed cases went away. I know this is contrary to Dinno suggestion above. Something to experiment with I suppose.