40 S&W primer pockets

[rabid wombat]

A couple of quick questions.....

Have you ever had crimped primer pockets on 40 S&W?

If not, why would primers crush?

Thanks!

 

[SwaneeSR]

40 S&W primer pockets

Could you post a photo? I had a problem last year with Winchester brass that had extra small primer pockets. I separated them out from the other brass, reamed to pocket larger and they primed fine.

Also what equipment are you priming on?

 

[LiveLife]

You can crush primers in uncrimped primer pockets if primer pocket ID diameter is too tight for primer cup OD (some non-domestic brand primers have slightly larger diameter primer cups).

If you are using once-fired brass with tighter primer pockets (S&B, RWS, etc.) and larger diameter primers (Fiocchi, Wolf, Tula, PMC, etc.), primer won't often seat fully below flush and remain above the case rim to be crushed.

For tighter primer pockets, I use CCI/Winchester/Magtech primers which I can readily seat .004" below flush. With once-fired S&B/RWS cases, even with CCI/Winchester/Magtech primers, seating to flush is a challenge (I am currently sorting out S&B/RWS cases to have primer pockets swaged with C-H swager).

Larger diameter primers are good for extending the life of brass with loose primer pockets.

 

[kcofohio]

A couple of quick questions.....

Have you ever had crimped primer pockets on 40 S&W?

If not, why would primers crush?

Thanks!

To your first question, yes, I have picked up 40 S&W range brass that was crimped. F.C., it was. It was after the Coast Guard had gone through their qualifying. I believe it was FC and 10.

 

[ReloaderFred]

I have about 5,000 of the FC 10 headstamped .40 S&W brass from the Coast Guard and it isn't crimped. I use it for making swaged .44 and .45 bullets, since it's so consistent weight wise.

Hope this helps.

Fred

 

[rabid wombat]

To all,

Thanks! Is seems to be occuring most with WIN brass, though the brass is mixed. I am using Win WSP primers on a Dillon 650. The brass was bought once fired. My inquirey to Winchester indicates they have not crimped any brass other than NATO loads. I am hoping to load a bunch of practice ammo, instead of buying factory. Your help is appreciated.

Thanks!