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Your comment about the tarnished bullets in the cardboard box made me think. This box was 2 1/2 maybe 3 yrs old. Stored in the box, in the garage. I believe I will change how I store my bullets in the future. I have dry packs in most everything except the new bullets. That never occurred to me. Until now. I've been happy w them until the blemishes. Now I realize that the blemishes were very likely my own fault. Thank You. Pete

Thank you for your response,
That sounds kind of along the same lines as me except red instead of blue. I started reloading after I retired.
That box of 9's was my last box of Berrys. I've always been pretty happy with them. I'm trying other manufacturers because Berry's seems to have more bullets that should probably be blems. Just to be clear, I do NOT believe the bullets were the problem. After keeping the box in the house overnight, I loaded up a couple hundred. No issues or problems. This box of bullets is .356, the cases are sized at .358/.359 depending on the case (some are longer/shorter than others, longer case, larger bell).
I realized the next day what may have caused the problem. The cases were on the bench, under the light, the bullets were on the bottom shelf against an outside wall. I don't know how warm the cases were but they were much warmer than the bullets. Once dialed in the press is set and I don't have a problem with any serious variances. .001+/- not counting case length. I think I've been pretty lucky in that respect.
My brass is mostly range p/u and I load everything that is loadable & not damaged and yes if the spent primer pops out w too much or w/o resistance of some sort it goes in a separate bin & gets mic'ed.
I enjoy the hobby & if my wife goes to the range w me, it's common for the two of us to go thru between 4-6 hundred rounds a morning. If she feels really good she can do that on her own, reloading helps keep the cpr down.
Thanks again for the input. Pete

Morning,
Thanks. Digital micrometer, it gets zero'd then checked with a .005 piece of shim stock multiple times per session. I really am pretty anal. I was just really surprised at the change in size. That made me rethink (overthink?) some of my previous rounds. I randomly pulled some out, measured & tried to compress them and couldn't. No change in size. I pulled the bullet and had minimal or no damage to the plating, they have since been reloaded. I have always loaded in a temp controlled area. I have a heater in my work area but did not turn it on before I started to work. I felt good & didn't realize how cool it really was. Odd thing to have happen but I'm glad it happened early in the session. Fewer rounds to go through and check. Pete

I have only been reloading for about 12yrs and had something weird happen this evening that gave new meaning to the term "shrinkage" & I was wondering if anyone else has experienced it. I moved my press into the garage last year.
I received my replacement sub-plate from Hornady, BIG thank you to Hornady & Shannon, a tech there (the e-zject boss was worn out on mine). I installed it, made the necessary adjustments to the press and was off & working. I started w 9mm, when the press indexed around to the bullet feed die, the bullet dropped INTO the case, all the way into it. OK, I'm pretty anal but, I have obviously screwed up. No, apparently not. After much check & double check and more bullets dropping into multiple cases, I started measuring bullets. The bullets mic'ed between .3525 and.3535, not .356 that I ordered from Berrys last year. This was a new box so I figured they just packed them incorrectly ? Then on a thought I checked the 38/357, 40, 44 & 45 bullets, ALL were undersize by 2 to 3 thousandths. Various manufacturers, Ranier, Extreme & Berrys. The boxes of bullets are stored on the bottom shelf on an exterior wall. My laser thermometer said the temp was 58. I brought the bullets into the house and let them warm up on the kitchen counter where it was 70. An hour an a half later the bullets were up to .3545-355. I understand temp affecting the expansion/contraction of material but was very surprised by the amount of change. Thoughts ? Pete