LiveLife
Member
During the "Great Component Shortage", I initially tested Promo as a viable powder choice when more popular powders were not available.
While there was no published load data from Alliant for pistol loads with Promo, since Alliant stated Promo was same "burn rate" as Red Dot and to use Promo by weight (and not by volume), many reloaders used Red Dot load data for Promo with good results - http://www.alliantpowder.com/products/powder/promo.aspx
As you can see from above comparison pictures ("Old Promo" from two different containers), Promo "initially" looked like crinkly Red Dot with round flakes added and it metered like Red Dot with .2-.3+ gr variance from Pro Auto Disk. Newer "blended" Promo looks like there's more round granules (and less crinkly Red Dot flakes) with even larger round granules added and now meters with less than .2 gr variance.
After several 8 lb containers of Promo later (can you say I like Promo? ) using it as primary pistol and carbine range practice/plinking powder, I have noticed newer containers of Promo seemed to meter better with less than .2 gr variance (about 60% of drops within .1 gr).
So when I did "C-H 502 Micrometer Powder Measure 10 Drops" thread, I was pleasantly surprised with .12 gr variance I got with Promo (which BTW was same as W231/HP-38) - https://www.thehighroad.org/index.php?threads/c-h-502-micrometer-powder-measure-10-drops.834894/
Here are 10 drops of Promo with .12 gr variance from C-H 502:
Here are 10 drops of Red Dot with .22 gr variance using same volumetric setting:
While there was no published load data from Alliant for pistol loads with Promo, since Alliant stated Promo was same "burn rate" as Red Dot and to use Promo by weight (and not by volume), many reloaders used Red Dot load data for Promo with good results - http://www.alliantpowder.com/products/powder/promo.aspx
As you can see from above comparison pictures ("Old Promo" from two different containers), Promo "initially" looked like crinkly Red Dot with round flakes added and it metered like Red Dot with .2-.3+ gr variance from Pro Auto Disk. Newer "blended" Promo looks like there's more round granules (and less crinkly Red Dot flakes) with even larger round granules added and now meters with less than .2 gr variance.
After several 8 lb containers of Promo later (can you say I like Promo? ) using it as primary pistol and carbine range practice/plinking powder, I have noticed newer containers of Promo seemed to meter better with less than .2 gr variance (about 60% of drops within .1 gr).
So when I did "C-H 502 Micrometer Powder Measure 10 Drops" thread, I was pleasantly surprised with .12 gr variance I got with Promo (which BTW was same as W231/HP-38) - https://www.thehighroad.org/index.php?threads/c-h-502-micrometer-powder-measure-10-drops.834894/
Here are 10 drops of Promo with .12 gr variance from C-H 502:
- 4.20 gr
- 4.16 gr
- 4.14 gr
- 4.20 gr
- 4.08 gr
- 4.12 gr
- 4.14 gr
- 4.14 gr
- 4.12 gr
- 4.08 gr
Here are 10 drops of Red Dot with .22 gr variance using same volumetric setting:
- 4.70 gr
- 4.70 gr
- 4.56 gr
- 4.58 gr
- 4.50 gr
- 4.52 gr
- 4.70 gr
- 4.58 gr
- 4.72 gr
- 4.60 gr
Attachments
Last edited: