SAAMI vs CIP Pressure Standards in QuickLOAD

[South Pender]

With the cartridges I've run in QL, the SAAMI pressure standard is more lenient than the CIP standard. In other words, a load is flagged as dangerous at higher max pressure using the SAAMI standard then with the CIP--i.e., the latter flagging a load as dangerous at lower pressures.

What to make of this? Can we assume that a load is safe if it doesn't exceed the SAAMI max pressure, but does exceed the CIP max pressure?

 

[abersfelderami]

It doesn't matter what the max pressure is. The max pressure is what you decide it is.
CIP is checking pressure differently than SAAMI.

 

[Zero333]

In some cases QL has CIP lower than SAAMI,.. but in other cases it's the other way around. .357 Magnum is a good example in QL.
SAAMI 357 mag max = 35,000 psi... CIP max = 43,511 psi.

As noted above, it might have to do with different methods of testing more than anything else.

Even having QL data, in many scenarios I still like to compare with other manuals and what other people are doing.

 

[JASmith]

As mentioned above, the SAAMI and CIP pressure measurement procedures and standards are different. I also know that CIP and SAAMI representatives meet regularly to assure consistency in what the standards mean even with the differences in definitions. That suggests that a safe load per SAAMI is likely also safe under the CIP standards if the correct definitions are observed and followed.

I use QuickLoad and have done enough research to know the developer lives in Germany. He likely grew up with CIP standard, which opens the possibility that the ‘safe pressure’ trigger is more accurate when the default parameters are used.

Even so, I generally stay with the SAAMI definitions simply because I am comfortable with how they work. I could, however, say the same about CIP provided I studied enough to understand how they work too.

 

[Big Mc]

With the cartridges I've run in QL, the SAAMI pressure standard is more lenient than the CIP standard. In other words, a load is flagged as dangerous at higher max pressure using the SAAMI standard then with the CIP--i.e., the latter flagging a load as dangerous at lower pressures.

What to make of this? Can we assume that a load is safe if it doesn't exceed the SAAMI max pressure, but does exceed the CIP max pressure?

The main thing to rember is, QL is just a tool. NOT THE BIBLE. You can play with numbers for ever. Be carefull. Just my too cents . Tommy Mc

 

[MagnumManiac]

The reason CIP differs from SAAMI is very simple...the data is taken at very different points on the case.
CIP measures pressure at the case mouth (or thereabouts) and SAAMI take their measurement in the middle of the case.
This the ONLY reason there is a difference in the numbers.

Cheers.