Accurate TCM Smokeless Powder 5 Lb
Accurate TCM (5 Lb)
by Accurate Reloading Powders
We now offers Accurate TCM (5 Lb). Accurate TCM was developed for the 22 TCM round as a canister-grade propellant. This powder can also be used for .357 Magnum, .41 Magnum and high pressure .45 Colt cartridges.
Specifications and Features:
- Canister-grade Powder
- Good Magnum Powder
- Made in the USA
Jaclyn T. Ward –
While the .22 TCM requires a slower burning pistol powder to generate adequate slide energy to cycle most conversion pistols. From a “clean sheet” I started with Ramshot Enforcer which is several rates faster than H110 and W296 – the two powders gauged to be closest to factory, both of which produce a huge fireball at the muzzle indicating incomplete combustion. Enforcer is fast enough to avoid the huge fireball, and it does produces good velocities, but after several thousand rounds of .22 TCM, .22 TCM9R, and 5.56×24 loaded, I knew a powder just a bit faster would be ideal for the 4-4.5″ pistols barrels. Enter Accurate Arms TCM powder. It’s listed about two-steps faster than Enforcer, yet two-steps slower than AA #7 which has proven to be ideal for the 5.7×28. This puts it right in the sweet spot for the .22 TCM “family” of cartridges. Grain structure is small, spherical grains that meter though my Redding 10X like miniature ball bearings which is to say, extremely accurately! Once I verify the measure by weight using a balance scale (no electronics for tiny bottleneck cartridges), the Redding 10X will meter TCM virtually spot on drop after drop! Granted the Redding 10X gets ample credit for being a superior device, but it couldn’t be so accurate without the fine grain structure designed from the outset for modern power measures. With TCM working maximum charges are about a grain lower than with Enforcer which doesn’t matter much with .22 TCM and TCM9R, but with 5.56×24 it leaves more room in the case. TCM works best with a moderate crimp to extend the time-pressure curve for best slide action.
Mary T. Seaton –
Best TCM for reloads I have ever come across