Home Forums Reloading Big Game Rifles Primer Diameter Variation

I have some Fed 215's that vary by a 1/2 thousandth in diameter. Sample of 100, about 20% were to the high side, 75% to the low side and 5% were in between. Seems I have some slightly soft brass that I loaded a little hot that exposed the primer diameter variation. I measured some CCI primers and could not detect any significant variation and all were to the high side dimension of the Fed 215's.

Has anyone measured primers enough to see a consistent trend in which manufacturers build to the max dimension?

There were a couple of recent threads going on loose seating WW-WLR primers due perhaps to the lack of plating on a current lot.

Link to "Loose primers"

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Thanks! The link provided to the James Calhoon provides some diameter measurements but does not mention variances.

We have quite a few WLRs, but recently switched to Fed 210s. No problem since.