Primer Identification

[Desert Demon]

I inherited these primers in the packaged condition. Is anyone able to definitely ID them based on measurements and primer compound color.

The are either SPP or SRP. I think they may be Winchester SPP. I haven’t been able to get ahold of Win Tech support.

Also think they could be CC1 41s.

Appreciate any input part from “toss them”

 

[FWoo45]

Send them to me for disposable. Don’t really have anything constructive beyond that.

 

[Desert Demon]

Send them to me for disposable. Don’t really have anything constructive beyond that.

Disposal as in you’ll dispose of them 1 at a time?

 

[mojavejim]

The #41's I've got have yellow chemical around the anvil. That looks red in the pics, if purple-ish could be wolf/Tula

 

[Desert Demon]

Thanks. It is red. I am fairly certain they are Winchester. I read that SPP are red and SRP are green. But I haven’t been able to confirm that definitively.

 

[FWoo45]

Disposal as in you’ll dispose of them 1 at a time?

You would be correct there. FWIW they look just like the Win SPP I have.

 

[mtang45]

I have both Winchester SRP and SPP. No guarantee what yours are but pictures of both below. First three are SPP

 

[Old Man with Gun]

The thickness of the cup may be telling?

 

[Desert Demon]

I have both Winchester SRP and SPP. No guarantee what yours are but pictures of both below. First three are SPP

View attachment 7773036
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Thanks, I think they primer compound his key. I’d like to hear it from Winchester, but after weeks I haven’t been called back.

 

[Choid]

SRP and SPP are identical in dimension, unlike LPP and LRP. If you don't want to chuck them, just use them in pistol rounds. It won't hurt anything. The opposite could.

 

[Desert Demon]

SRP and SPP are identical in dimension, unlike LPP and LRP. If you don't want to chuck them, just use them in pistol rounds. It won't hurt anything. The opposite could.

So you’re saying it’s safe to used Rifle primers In pistol rounds? But not safe to use pistol primers in rifle rounds?

I was really hoping to use these in my 6.5 Grendel!

 

[TxWelder35]

So you’re saying it’s safe to used Rifle primers In pistol rounds? But not safe to use pistol primers in rifle rounds?

I was really hoping to use these in my 6.5 Grendel!

Yes that is correct.

Try and measure the cup thickness. That should be telling in between pistol and rifle primers with the rifle primer having a thicker cup than pistol

 

[Choid]

So you’re saying it’s safe to used Rifle primers In pistol rounds? But not safe to use pistol primers in rifle rounds?

I was really hoping to use these in my 6.5 Grendel!

So, I would not use unidentified primers in anything, but yes, you are safe using rifle primers in pistol rounds.

 

[Desert Demon]

Well if I could get the primers I need, I would need to use these.

 

[whatsupdoc]

First they are not consistent with NEW MFG Winchester 41 primers as the ones I have
do not have the RED "sealant" sprayed on the anvil.

Green and RED color mean nothing as I have seen BOTH colors in Winchester large rifle primers.


Edit:
Do you really think Winchester is going to identify the primers by a picture and be held liable for your bag of primers.

 

[Baddog 0302]

My 41's have a "gold/bronze" cup like Rem. and my WW SRP look gray on the compound.
As others have said it's ok to load your ???? primers in pistol cases BUT not in rifle rounds.
I use WW SRP in loading my 9 mm. A few of my local internet "x-spurts" claim "gloom and doom", but I have targets0 that prove other wise, and I'm still shooting.

 

[Desert Demon]

First they are not consistent with NEW MFG Winchester 41 primers as the ones I have
do not have the RED "sealant" sprayed on the anvil.

Green and RED color mean nothing as I have seen BOTH colors in Winchester large rifle primers.


Edit:
Do you really think Winchester is going to identify the primers by a picture and be held liable for your bag of primers.

Well, I won’t know unless I ask.

 

[Desert Demon]

I have both Winchester SRP and SPP. No guarantee what yours are but pictures of both below. First three are SPP

View attachment 7773036
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View attachment 7773041

Thanks. This is helpful

 

[RegionRat]

http://www.jamescalhoon.com/primers_and_pressure.php

This is an old link, but you get the idea. If you can burn these up in pistol you can relax a little.
If you really need these for rifle and are willing to take more steps and accept the risks, you need to know the primer cup thickness to reduce the risk it will not leak under the higher pressure.

 

[Old Man with Gun]

And if they are rifle primers used in a pistol they will not flatten with high pressure as a pistol primer would.

 

[Desert Demon]

http://www.jamescalhoon.com/primers_and_pressure.php

This is an old link, but you get the idea. If you can burn these up in pistol you can relax a little.
If you really need these for rifle and are willing to take more steps and accept the risks, you need to know the primer cup thickness to reduce the risk it will not leak under the higher pressure.

Thank you.