Myth busting - Does new Deluxe PPM leak?

[LiveLife]

The "Deluxe Perfect Powder Measure" is a new version of the "Perfect Powder Measure".

Does it reduce leakage?

I was initially going to answer the question based on what I found while doing 50 drops with the new all metal Deluxe Perfect Powder Measure (BTW, more than 90% of drops were within .04 gr from target).

What I found from that thread was simply holding the powder pan under the drop tube allowed powder granules to splash out of the pan to look like the measure was leaking. So I cut a plastic medicine bottle to prevent powder "splash out" - https://www.thehighroad.org/index.p...ct-powder-measure.922834/page-2#post-12712364

While I moved on with 50 drop sessions without much thought about measure leakage, new thread brought up the question whether the Deluxe PPM leaked. So decided to do another myth busting to find out.

Testing Set Up: Bench surface was cleared of debri (I am gearing up to do comprehensive digital scale zero drift over time testing) and Deluxe PPM was mounted to the new Lee "hefty" powder measure stand and copy paper was placed underneath to detect leakage of powder granules. Brass cone surface around the cavity was cleaned and installed with finger tight light tension. Two hopper full of W231/HP-38 were run through the measure with cavity setting set to 16.5 gr to expedite the drops. Cut medicine bottle was used to catch the drops and prevent "splash out" of powder granules.



Finding: No powder leakage of W231/HP-38



Close up of stand base. At first I thought I saw some granules but they were imperfections in the paint.

 

[CQB45ACP]

I was initially going to answer the question based on what I found while doing 50 drops with the new all metal Deluxe Perfect Powder Measure (BTW, more than 90% of drops were within .04 gr from target).

What I found from that thread was simply holding the powder pan under the drop tube allowed powder granules to splash out of the pan to look like the measure was leaking. So I cut a plastic medicine bottle to prevent powder "splash out" - https://www.thehighroad.org/index.p...ct-powder-measure.922834/page-2#post-12712364

While I moved on with 50 drop sessions without much thought about measure leakage, new thread brought up the question whether the Deluxe PPM leaked. So decided to do another myth busting to find out.

Testing Set Up: Bench surface was cleared of debri (I am gearing up to do comprehensive digital scale zero drift over time testing) and Deluxe PPM was mounted to the new Lee "hefty" powder measure stand and copy paper was placed underneath to detect leakage of powder granules. Brass cone surface around the cavity was cleaned and installed with finger tight light tension. Two hopper full of W231/HP-38 were run through the measure with cavity setting set to 16.5 gr to expedite the drops. Cut medicine bottle was used to catch the drops and prevent "splash out" of powder granules.

View attachment 1192620

Finding: No powder leakage of W231/HP-38

View attachment 1192618

Close up of stand base. At first I thought I saw some granules but they were imperfections in the paint.

View attachment 1192619

Thats what I call service

 

[LiveLife]

Thats what I call service

@jmorris and other THR members demand highest level of measurable and repeatable data.

"I think so" was not going to cut it, so myth busting it is. And glad to be of service to THR.

 

[CQB45ACP]

@jmorris and other THR members demand highest level of measurable and repeatable data.

"I think so" was not going to cut it, so myth busting it is. And glad to be of service to THR.

And some of you are able and willing to provide it. Thanks

 

[jmorris]

I'll leave myth busting to you, I just have too much time on my hands....

 

[GeoDudeFlorida]

@jmorris and other THR members demand highest level of measurable and repeatable data.

"I think so" was not going to cut it, so myth busting it is. And glad to be of service to THR.

First, excellent and thanks! Does not apply to me but still grateful for the effort.
Second, will there be further testing with “grittier” powders like Accurate 4100/Ramshot Enforcer?
Finally, have you considered using an extended drop tube and metered test tube for catching? That way you can get an instant read on volume and weight simultaneously.
If that kind of additional information is useful. Not sure if it is or isn’t for “Mythbusting”.

 

[LiveLife]

will there be further testing with “grittier” powders like Accurate 4100/Ramshot Enforcer?

Most of my powders were gifted/PIF during post Covid shortage thinking I would restock after current shortage bottomed.

Powders I currently have on hand after several attempts at restocking are W231/HP-38, Promo, Titegroup, No 2, H335, TAC, BL-C(2) and StaBall Match.