Reloading with Accurate TCM

[14run]

Hello, I am new to this site and a novice when it comes to reloading. Since powder is difficult to obtain I found a supplier with TCM powder and purchased it. I found no data on reloading for 10mm and wonder if anyone would have any information or did I make a mistake on buying the powder? I have 180 and 200 grn projectiles.
Thank you for looking at this thread.

[The_Shadow]

Welcome to the forum 14run! 

In 2017, Western Powders partnered with Armscor International to provide a canister-grade propellant for their innovative .22 TCM cartridge. Producing 2,000 fps at the muzzle with virtually no recoil, this accurate and fun little cartridge brings handgun performance to a new level for small game hunting and plinking. Accurate TCM also has a place with old favorites, with data for hunting loads in .357 Magnum, .41 Magnum and high-pressure .45 Colt cartridges. Made in the USA.c

TCM powder is shown for the use in 41 Magnum and seems to be a little faster than Accurate #9 by it burn rate. (had to correct the earlier thinking it was slower that Accurate #9) 
https://imrpowder.com/wp-content/uploads/2019/12/2020-burn-rate-chart.pdf
Not sure if it will work well in 10mm as slower powder can be harder to ignite and cartridges without much crimp you could exhibit a squib situation.


If you want to attempt to use TCM in the 10mm I would work at the Accurate #9 loads for 10mm for any testing.  But like I mentioned you could have a situation where the powder fails to ignite and the primer could push the bullet in to the forcing cone as a squib.  Looking at the amount of powder being used as compared to #9 it looks like TCM uses more powder.


Personally I'd try to find a different powder with data for what you want to load...

[DDRiller]

I would use a magnum primer to help it ignite.

[The_Shadow]

Looking at the 357 data with TCM powder & comparing to Accurate #9

[14run]

Thank you all, I will first look into Magnum primers and move on from there.

[smokinjoescbr]

Sorry to rehash an old post but I was browsing through the forums and noticed a TCM  discussion so I thought I would throw in my two cents.  I have some experience with working up TCM loads in odd calibers like .480 Ruger, .500 JRH, 9x23 Winchester etc.  During the "great powder shortage" I was looking for odd powders I could use in place of the typical magnum pistol powders like 296, h110, 4227, AA9.  I purchased 10 lbs of TCM and started tinkering and had good performance in all the calibers listed.  After speaking with an engineer at Western Powders he informed me that TCM falls right in the middle of AA9 and 4100 and to use AA9 load data and work up from there.  In my opinion I would say TCM could be a viable option in 10mm with heavy bullets.

[Jmont]

I bought 3 pounds of it thinking it was a viable powder for the 10. Started at 11.6-13.0 grains and never got past 1065fps on the chrono. I say it?s to slow and hard to ignite. I used cci 300 and fed LPMM.  Blown unburnt powder in my slide and barrel with both. I?m going to pull unshot loads back down and try 3n37.

[Troutramp]

I bought some thinking I might work up some loads for my 10mm mag revolver project. The chart I saw listed it right next to 2400?