Has anyone worked up a load using IMR 4227?

[G40MOSHunter]

As the subject asks, has anyone worked up a load using IMR 4227?

I bought a pound of this powder back when powder was scarce. I had acquired load data for .458 SOCOM and tried using that data, only to find that the rifle wouldn't cycle properly. I recently discovered load data for 6.8mm SPC, but it turns out that I can't use that load. That load data was for the 85/90 grain projectiles, and I'm using 115grain bullets.

Anyway, I have some (100 pieces of) once fired 10mm brass, the IMR4227 powder, and I'm not restricted to bullet weight (I can buy whatever).

I see that in the Speer #14 book, there are loads for:

.357 Mag:

140 Gr projectile, 17.2 to 19.2 gr of IMR-4227
158 Gr projectile, 15 to 17 gr of IMR-4227
170 Gr projectile, 16.1 to 16.7 gr of IMR-4227

.41 Mag:

200 Gr projectile, 18 to 20 gr of IMR-4227
210 Gr projectile, 21 to 22 gr of IMR-4227
220 Gr projectile, 17 to 19 gr of IMR-4227

Has anyone loaded a 180'ish bullet on top of 20'ish grains of IMR-4227? Or anything similar? I guess I'm just looking for a starting point. My pistol is a Glock 20. I'm not looking for a minimum or maximum load, my only criteria is that the pistol has to cycle reliably...

I have this powder, I suppose I could just spill it on the patio and light it up, but I was hoping I could use it for something...

Thanks in advance if anyone has any thoughts.

[The_Shadow]

IMR4227 is too bulky and you can't get enough inside the casing.  Those cartridges also utilize a good rolled crimp to get full ignition whereas the 10mm the bullet will start moving before full ignition takes place, that equates to unburned powder.

Kind of the same thing with H-110/W296 as well.

[blaster]

thanks Shadow, you answered a question I was about to ask. both IMR 4227 and H-110/W-296 are my favorites for the .357 & .44mag. I also use it for 300 BLK supers so I have a LOT of it on hand.  I could realy save a lot of room in my powder cabinet if the different calibers I load for didn't need their own flavor of powder.

[oldman10mm]

IMR4227 is in the too slow end even for 357,41,44Ms' but it still useable for them. 10mm and 41M are similar in caliber but different in case capacity where the 41Ms' larger case capacity,compared to the 10mm,can better utilize the slowness of IMR4227. IMR4227 was never intended for the pistol autoloaders' smaller case capacities compared to revolver cartridges case capacities. IMR4227 is slower than 2400 and that's not used for pistol autoloaders.

[tommac919]

2400 and that's not used for pistol autoloaders.

There are quite a few loads for 10mm and 2400 powder.... Just have to look at the older manuals.

Is it the best, maybe not but it does work well as I've tried a few during the shortages before I got good amount of Blue Dot.

http://www.castpics.net/LoadData/Freebies/RM/Alliant.html

[oldman10mm]

maybe I should have said '2400 is not one of the primary candidate powders for pistol autoloaders'.