How big is too big?

[igolfat8]

I slugged my 9mm KKM barrel and it measured .355" - .3555". I am sizing some Lee 120 TC and 125 RN boolits with my NEW Lee .357" sizer kit. The boolits came out .356 out of the .357" sizer die so I opened it up with some emery cloth on a whip in a die grinder ... BUT ... I went too far and now they are sizing to .358"-.359". Is this too large to safely shoot in my 9mm Glock 34 or should I buy a new die? BTW I am powder coating the boolits and sizing after coating.

[petroid]

If they will chamber they are fine to use at that size just make sure you expand the case moth enough so that you don't swage the bullet down when seating

[Artful]

Are the sizing to .358"-.359" after the powder coating or before? You may need to resize after powder coating them. You can always remove the barrel from your
pistol and give them a plunk test - drop the loaded cartridge in the chamber and it should sound "plunk" and
should be flush and be easy to remove from the chamber.

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