Winchester has just introduced a new ball propellant, StaBALL 6.5, which it claims is very temp-stable. This means velocities and pressures should not vary greatly across a wide range of ambient temperatures. Winchester states: “StaBALL 6.5 is the world’s first temperature-insensitive Ball Powder, stable in extreme-hot or extreme-cold temperatures.” Winchester also claims StaBALL 6.5 can offer 30-200 fps greater velocities than other powders with similar burn rates. This new powder also has additives to reduce copper fouling. StaBALL 6.5’s burn rate and load density is good for popular cartridges such as .223 Rem, 6mm Creedmoor, 6.5×47 Lapua, 6.5 Creedmoor, and .270 Win. If StaBALL 6.5 can really deliver excellent metering, temp stability, more speed, AND less fouling — Winchester could really have a winner.

Metering Advantages of Ball Propellants
As there are existing very temp-stable extruded powders, such as Reloder 16 and H4350, what’s the big deal here? Well ball powders, with their small spherical granules, flow easily and meter well. This means ball powders can be thrown in manual powder measures with great precision. So StaBALL 6.5 could have advantages for hand-loaders using manual powder measures or progressive presses with mechanically-operated charge dispensers.

Reloading Data is ONLINE Now

Reloading Data is NOW Available on the Winchester website for a wide variety of cartridges including: 22 Nosler, .223 Rem, 224 Valkyrie, 22-250 Rem, 6GT, 6×47 Lapua, 6mm Creedmoor 6.5×47 Lapua, 6.5 Creedmoor, .260 Rem, .270 Win, 7mm-08, .30-06, 300 WSM and more. To get official LOAD DATA, scroll below the product description, select a cartridge type, and then click the RED “Get Reloading Data” tab. Here are two of 13 listed load options (55-115 grain bullets) for the 6mm Creedmoor:

Winchester’s StaBALL 6.5 Product Description States:

StaBALL 6.5 powder is available in 1 lb. and 8 lb. containers.