that is a very small variance that can be attributed to the bullets' ogive or "thickness" of plating or the stroke on the handle of your reloader.
if it does not affect accuracy and you still get tight groups then you're good to go and you should not worry about it.
i load a lot of cmj bullets for 9mm luger. unfortunately we can not get Berry's bullets where I live but I believe they are very good quality from what I read about them.
While Plated Round Nose & Full Metal Jacket 9mm Luger bullets still come to a certain degree of a point. Just like Lead Cone Nose. My Lee Seating Die accommodates them with precise C.O.L. But, the shape of 9mm Makarov is a different animal all together.
And since I don't have much experience (just a newbie) your advise is very much appreciated.
I looked up ogive (a new word) keep them coming
Question: Term used "CMJ" does C stand for CONE OR CONICAL? Here in US we use FMJ (full), TMJ (total), Flat Point, etc...
Please explain is CMJ used widely or a SA term???
Steve H.