Powder manufacturers brass

[Snuby642]

None that I have noticed have said what condition thier test brass was in.

For example they give the brand of brass but do not necessarily state virgin brass or fire formed.

I'm thinking there is enough case volume difference to skew my results?

 

[spife7980]

What about the differences in the chambers themselves? Or in the lots between brass? Or powder condition, or bore dimensions etc.

It’s a general reference with major disclaimers to start low and work up to cover their own ass because there are so many differences.

 

[Snuby642]

Was that your short answer?

Lol

I was trying to clone fgmm with cfe223 and it dawned on me that I have out ran it and trying to get a grasp of if I will hit the next node before running out of volume while carefully watching preasure.

I will take a chill pill and dump more powder and if that don't work go way back down.

 

[918v]

None that I have noticed have said what condition thier test brass was in.

For example they give the brand of brass but do not necessarily state virgin brass or fire formed.

I'm thinking there is enough case volume difference to skew my results?

Case volume is a function of brass AND chamber. The two variables have to be considered together. It does not matter whether the case is new or fire formed. The case is malleable and conforms to the chamber’s dimensions under pressure.

 

[Snuby642]

You know I get that part.

Fire formed will have more volume thats why I would like to know.

 

[918v]

But that does not matter for the purpose of calculating pressure.