Alliant Red Dot (Left) ------------------ IMR Red (Center) ------------------- Alliant Promo (Right)
Disclaimer: Following post contains loads currently not published by Hodgdon - Use them at your own risk.
As you can see from the comparison picture above, IMR Red is large bulky flake powder like Red Dot/Promo. Promo is my current general purpose powder for 9mm/45ACP pistol/carbine plinking loads that produce more than acceptable level of accuracy with nice case fill at lower cost (Powder Valley $113 / 8 lbs). Due to fluffiness, IMR Red also produced nice case fill 9mm loads. While IMR Target comes in 16 oz containers, IMR Red and IMR Green come in 14 oz containers -
https://www.thehighroad.org/index.p...-and-vectan-ba-9-5-ba-9.817796/#post-10490012
From my Pro Auto Disk, I got the following charges dropped (Powder charge variance of IMR Red is similar to variance I get with Red Dot/Promo):
AD .46 = 3.2 - 3.3 gr (mostly 3.3 gr)
AD .49 = 3.4 - 3.5 gr (mostly 3.5 gr - occasional 3.7 gr)
AD .53 = 3.6 - 3.7 gr (mostly 3.7 gr - occasional 3.9 gr)
AD .57 = 4.0 - 4.1 gr (mostly 4.0 to 4.1 gr - occasional 4.3 gr)
Since there's no published load data for IMR and 9mm (I normally use 3.8-4.0 gr of Promo for 124 gr lead/plated/jacketed bullets), I approached this uncharted territory cautiously and loaded test rounds of following (1.160" OAL/COL was used to not compress 4.0+ gr charges along with .378" taper crimp):
RMR 124 gr Hardcore Match RN 1.160" OAL: 3.2-3.3, 3.4-3.5, 3.6-3.7 and 4.0-4.1 gr
Chrono data from Glock 22/KKM conversion barrel and Caldwell chronograph:
RMR 124 gr Hardcore Match RN 1.160" OAL (Temp 84F):
3.2-3.3 gr: 880-808-734-811-802 fps SD 51 (Did not cycle the slide)
3.4-3.5 gr: 838-840-849-830-770 fps SD 31 (All rounds stove piped)
3.6-3.7 gr: 915-916-895-914-889 fps SD 12 (Cycled the slide)
4.0-4.1 gr: 1000-935-923-917-1022 fps SD 48 (Cycled the slide)
25 yard 10 round shot groups with 17" Just Right carbine, Bushnell 6-18x50mm and UTG bipod:
RMR 124 gr Hardcore Match RN at 1.160" with 3.2-3.3 gr (Far left), 3.4-3.5 gr (Mid left), 3.6-3.7 gr (Mid right) and 4.0-4.1 gr (Far right)
So if you want to load IMR Red for 9mm, you can reference my data instead of going at it blind. I am not sure why Hodgdon did not publish 9mm load data for IMR Red as there are load data for 45ACP. Based on my initial testing, I will be repeating accuracy testing of IMR Red at 3.6-3.7 gr and 4.0-4.1 gr with 124 gr Hardcore Match RN bullets and again with RMR in-house 124 gr FMJ once they become available since RMR in-house 115 gr FMJ produced smaller shot groups than 115 gr Hardcore Match RN.