Smokeless Powders Ease Of Ignition Rate Chart.

[arrowshooter]

I am not an expert, but I would consider cup thickness is the main differential. This can bee seen in virtually all of the primer specs. I have seen a video depicting the "flame" differential between primers, but not sure how accurate it really was.

 

[Mikej]

I am not an expert, but I would consider cup thickness is the main differential. This can bee seen in virtually all of the primer specs. I have seen a video depicting the "flame" differential between primers, but not sure how accurate it really was.

That's the side I was leaning to. I have viewed the chart that showed the dimensions of primer cups too.

 

[arakboss]

I'm still somewhat confused as to whether mag primers have a hotter fire, a thicker cup to handle higher pressures in magnum rounds, or both. OR? It depends on the primer manufacturer?

I think it can be all of the above depending on manufacture.

 

[Mikej]

To the original topic. For what it's worth. I learned that a powder, HS-6, is kind of lack luster/dirty in .38sp, .45acp. But running in the smaller, higher pressure 9mm and .40 S&W it ran cleaner. with better case fill than the popular 231, Bullseye etc.

 

[P7M13]

I'm still somewhat confused as to whether mag primers have a hotter fire, a thicker cup to handle higher pressures in magnum rounds, or both. OR? It depends on the primer manufacturer?

A very erudite read:

CHOOSING THE RIGHT PRIMER - A PRIMER ON PRIMERS

 

[DizzyJ]

A very erudite read:

CHOOSING THE RIGHT PRIMER - A PRIMER ON PRIMERS

Good stuff