Using small rifle primers for pistol loads???

[longdayjake]

As I understand it the magnum primers also have a stouter cup to withstand the pressure. If thats not true someone please chime in and let me know.

 

[MCMXI]

As I understand it the magnum primers also have a stouter cup to withstand the pressure. If thats not true someone please chime in and let me know.

If this is true, wouldn't magnum rifle primers be a good idea for the "slamfire prone M1A"? Roadkill mentioned that he uses magnum rifle primers for his M1A.

 

[jcwit]

All you guys using rifle primers in pistol cartridges, please post your pressure readings for both loads

Pray tell me just how this would be possible for the average reloader?

Regardless drop the charge 10% and work up your load. Not a big problem, primers are not sticks of dynamit. Small Rifle in small Pistol OK - Small Pistol in Small Rifle NO-No.

Forget it with Large Pistol and Large Rifle.

 

[Landric]

I've used some Wolf Small Rifle Magnum in place of small pistol. Generally it was successful, but I had a couple of light strikes with factory spring revolvers (just a couple), and the standard deviations got bigger, not smaller. Now, the Wolf SRM has a harder cup than their standard SR, so if I can get my hands on some Wolf SR, I might give those a try in handgun as well. Right now all the SR primers I have a Wolf SRM or 223 marked, both of which have harder cups.

 

[45crittergitter]

Quote:
All you guys using rifle primers in pistol cartridges, please post your pressure readings for both loads

Pray tell me just how this would be possible for the average reloader?

Well, you made my point. Since you don't know the pressure, and you are off the charts of the manuals, you don't know what you're doing, and 10% is a random, arbitrary number that may or may not be relevant or useful. I've seen primer pressure variation data exceeding 10%. Therefore, any ASSUMPTION that doing something other than using pressure indicating procedures is somehow safe, is purely that - an assumption. If a manual says use xyz pistol primer and cut starting loads by 10% for other pistol primers, that's fine - the company presumably checked the pressures or knows the variation. If it says nothing about rifle primers, they don't know (or won't tell) how far off you are.

Best case - you're exactly right and you saved $30. Every other possibility is worse, including what may possibly happen to someone else who followed a poor example.

 

[Zak Smith]

Well, you made my point. Since you don't know the pressure, and you are off the charts of the manual you don't know what you're doing,

I am all for safety, but to take this point to its logical conclusion one couldn't ever use a combination of components that wasn't published somewhere- maybe someone has published data in a book for your Berger bullet, but how about with BR2 or 210M primers and Norma brass instead of Winchester? To draw another logical conclusion, how about a .223 Wylde chamber instead of .223 Rem or 5.56 MM? I've never seen data in a book for a Wylde chamber. Similarly, how about everyone who loads for wildcat cartridges, or calibers too new to have published load data.

The point that changing components does not always have predictable pressure results is valid; however, to condemn all loads developed that are not book recipes is invalid.

-z

 

[jcwit]

So drop your charge 15 or 20 % and work up from there. As stated primers are not a stick of dynamite, ever poped one when reloading, got all your fingers? May not have any scientific figures in regard but then I have no scientific figures in regards to driving down the road at 3:00 PM in the afternoon of the day or any other time. But that doesn't stop me. Big secret unknown here to many is "common sense", something in very short supply today. Use common sense and watch for pressure signs.

Of course you could go out and buy a pressure testing set up, probably only a few grand.

 

[largemouth1]

sMALL PISTOL PRIMERS

I JUST POSTED A NOTE ABOUT THIS ON LONGDAYJAKE
Largemouth1