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One more primer question

Multiracer

Multiracer

Gold $$ Contributor
Given the climate of primer availability....is it prudent to use Large pistol in place of large rifle ? Or maybe large Magnum pistol ? Loading 6.5 C/M 4.1 g 4350.
 
Multiracer said:
Given the climate of primer availability....is it prudent to use Large pistol in place of large rifle ? Or maybe large Magnum pistol ? Loading 6.5 C/M 4.1 g 4350.
Click to expand...
Rifle and pistol primers are not equal. Rifle primers are made for much higher pressures than pistol. About the only rifle cartridges that can get away with pistol primers (depending on powders and loads) are those that work at the lower pressures such as the .22 Hornet and .218 Bee.
Example: .44 Magnums and the like commonly run a SAAMI pressure of 36,000 psi while your 6.5 runs 62,000 psi.
 
Check and compare the primer cup thickness of each type cup you’re thinking of using. That may tell!

Escaping Hot gases from the load tends to burn the bolt face.
 
Multiracer said:
Given the climate of primer availability....is it prudent to use Large pistol in place of large rifle ? Or maybe large Magnum pistol ? Loading 6.5 C/M 4.1 g 4350.
Click to expand...
The climate of primer availability? Really? Primers are available. All you have to do is look. Don't do something foolish and unsafe simply because you don't want to spend the time looking for primers online.
 
Multiracer said:
Given the climate of primer availability....is it prudent to use Large pistol in place of large rifle ? Or maybe large Magnum pistol ? Loading 6.5 C/M 4.1 g 4350.
Click to expand...
I would never use a pistol primer in a rifle caliber!

Now, I hope this is a Typo, But 4.1Grs of 4350 in a 6.5CM? I doubt the bullet would make it down the barrel at that charge!
 
As stated, they won't even fit right.

Federal, at one point years ago, stated that their SMALL Rifle and SMALL pistol standard primers were the same product. But Large are not even close.

Pistol primers can slam fire and pierce in rifles in some cases. I know this for sure.
 
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Asking the same question again till you hear the answer you like isn't going to end well in reloading.

I knew this question sounded familiar, but then 358WCF points out it was being asked by the same person just a few weeks ago?.... I won't wonder why for more than a split second.

Many times I recommend new reloaders seek out a live mentor in their area by visiting the local ranges where they find the type of shooting they like.

This is another time I will make the "get a mentor" recommendation, but I will also caution that playing with the kinds of pressure we have in firearms is not for everyone.

There is a large traditional difference in the typical pressures between handguns, shotguns, and centerfire rifles. The lines between them can get blurred but allow me to simplify the reason you should not ask the same question again two weeks from now. In general, there can be factors higher pressure in rifles so the strength of the materials in the cartridges must meet those safety margins.

For example, a 38 Special runs about 17.5 ksi and has roughly 150 to 310 ft*lbs of energy.
A 30-06 Springfield Rifle runs about 60 ksi and has roughly 3000 ft*lbs of energy.
So, the materials in the primer cups must perform at vastly different pressure with safety margin.
Also, do not mistake material thickness for material strength.
Concepts like upward or downward compatibility are not for rookies. Do not pull substitutions as a beginner.

Unless you plan on finishing engineering school, stick to the basics and play it safe when starting out, especially if you are doing this in the vacuum of the internet without a mentor.

No harm if you are asking an honest question because you are starting out. Not everyone who jumps into this has a practical background and many folks are raised in places where they have no previous exposure to firearms or reloading. On the other hand, if you are a troll or a bot seeking to waste everyone's time, you have been highlighted.
 
67 years young, one 6 month ICU bout with the 19 bug will do your memory in. I wont ask again ! I did find a chart showing all dimensions of all primers. The only dimension difference is LRP. They are shorter. The chart did not specify any wall thickness. But the pressure difference makes sense.
 
358WCF said:
Same answer as 2 weeks ago. NO.

Primer question

Noob question. Due to the continuing shortages and pricing will Large "Magnum" pistol primers work in a rifle case ex. 6.5 CM ?
forum.accurateshooter.com

4.1 grains of 4350? Could be a problem with that too... with any .264 bullet weight. Details matter.
Click to expand...
41.5 grains...typo. This was posted March of 2022.
 
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