Oversize vs. normal primer flash holes


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allain
December 30, 2009, 12:31 PM
Has anyone noticed a difference between brass with oversized vs. normal sized primer flash holes?

I'm not talking about huge holes, but those roughly 1/4 to 1/2 larger than the normal .062 flash hole. Not that large, but larger. And some twice as large. They all seemed to be ok, but until I inspected them and saw the flash hole differences and wondered if that would account for those rounds out of the group.

I inspect ALL my brass during the 1st (prep) stage and discard brass with very large flash holes and any offcenter flash holes. These are very few (only 6 in the past year).

I have a number of pieces of brass, with larger flash holes and wonder if the internal ballistics affect the external or terminal ballistics.

Thanks for any comments.

Roy

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ReloaderFred
December 30, 2009, 12:35 PM
This has been covered in numerous threads. With some brands, such as Winchester, Federal and Speer, the larger flash hole is the new normal. Just load and shoot. Unless you're a precision bullseye shooter, shooting at 50 yards, you won't notice any difference.

Hope this helps.

Fred

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