Gave my Dillon .223 trimmer die a quick look last night, at a glance it looks like it's straight-walled rather than reamed.

Am I right about that ??

If so, I should be able to use the standard Dillon 22-250 trimmer die for 22-250 AI, right ?? If it's straight-walled the different taper and shoulder angle of the AI won't matter ??