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Using small rifle primers for pistol cartridges


Buckshot Bear
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42 minutes ago, Kid Rich said:

According to the article they are indeed thicker. 25 thousands opposed to either 17 or 20 thousands. If you disagree with that go to SKSboards and get them to set the record straight. I'm not making any claims just trying to help a fellow shooter.

kR

Just measured a std sp CCI at .017

CCI sp mag at .020

SR std at .020

Don't have any sr mag to check.

I used a 'pin' micrometer for this.

OLG 

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On 10/30/2021 at 10:46 AM, Marauder SASS #13056 said:

Yup, I remember when 1000 primers went up to $11!

Yes.  I remember they were $1/100 and if you bought nine trays  the tenth one was free.  Also they were packaged in cottonwood trays.

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1 hour ago, The Original Lumpy Gritz said:

Just measured a std sp CCI at .017

CCI sp mag at .020

SR std at .020

Don't have any sr mag to check.

I used a 'pin' micrometer for this.

OLG 

Those are the correct measurements. The reason for the extra thickness in the SRM's is that they are supposed to be ok for 223 etc.

kR

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57 minutes ago, Kid Rich said:

Those are the correct measurements. The reason for the extra thickness in the SRM's is that they are supposed to be ok for 223 etc.

kR

There are a number of cartridges that use sr that produce much higher chamber pressures that .223.

.454 Casull is just one.

Then, there's the military version of that primer....

OLG 

 

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On 11/17/2021 at 10:24 PM, Abilene, SASS # 27489 said:

Bringing this back for a question.  Knowing that small rifle primers are same as small pistol is good, but what about small rifle MAGNUM primers?  Are those interchangeable with small pistol magnum (which for CAS use would be same as SP)?  In particular, does being magnum make them have a harder cup that would take more force to set off?

Yes the thicker CCI Magnum srp is harder to set off. I tried them in 3 sets of revolvers and one 73. The SRP were no problem, all went off with no problem first strike. The srp Magnum had one failure on the first try but went off on the second attempt, that was in one of the pistols. There was a noticeable difference in depth of dent in the primers between SRP and SRP Magnum, with the Magnum showing the lighter strikes.

kR

PS these guns all have lighter springs in them.

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On 10/28/2021 at 6:35 PM, Buckshot Bear said:

How much hotter are small rifle primers over small pistol primers? 

My gun shop just got in some. 

Would they increase pressures? Ie a very bad idea? 

At the speed and pressures  we shoot at  in CAS shooting  .

I see no Problems at all .

You Probably wont even see much of a difference in them and your other rounds .   

You might Hive a High Primer issue once in a wile though .

 

You  would see a bigger issue with Max Charge Magnum Loads in most cartridges .

Just sayin Rooster 

 

 

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4 hours ago, Rooster Ron Wayne said:

At the speed and pressures  we shoot at  in CAS shooting  .

I see no Problems at all .

You Probably wont even see much of a difference in them and your other rounds .   

You might Hive a High Primer issue once in a wile though .

 

You  would see a bigger issue with Max Charge Magnum Loads in most cartridges .

Just sayin Rooster 

 

 

 

I'm very glad of that because I have a LOT of 'em now and glad to have 'em!

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