.22 Hornet (IMR Data)

.22 Hornet (IMR Data)

Among the more traditional powder choices for the .22 Hornet, IMR 4227 stands out for its consistent performance and long-standing reputation in both rifle and handgun applications. Known for its clean burn characteristics and reliable ignition in small-capacity cases, IMR 4227 remains a trusted pick for handloaders seeking stable velocities and safe pressures in lightweight varmint loads.

For decades, IMR has listed 4227 as a go-to option for the Hornet, especially when paired with lighter bullets in the 35- to 45-grain range. While its faster burn rate compared to some modern spherical powders means reduced flexibility in the upper charge window, its forgiving nature and solid track record make it ideal for classic rifles with older chamber dimensions or softer barrel steels. In these rifles, even modest loads can deliver satisfying accuracy at typical Hornet ranges of 100 to 200 yards.

Reloaders working with IMR 4227 will often note that consistent case prep—especially uniform primer pockets and minimal neck tension variation—has a significant impact on both standard deviation and group size. While not the most velocity-maximized powder for the Hornet, 4227’s advantages lie in its dependability, ease of metering, and its longstanding availability from major retailers.

For those loading the .22 Hornet in bolt actions, single-shots, or older lever guns, IMR 4227 remains a respected and frequently revisited powder. It brings out the nostalgic qualities of the Hornet while still delivering modern-level precision when combined with careful component matching and attention to barrel harmonics.

Source: Wolfe Publishing & IMR data