.22 Hornet (Winchester Small Rifle Primers)

.22 Hornet (Winchester Small Rifle Primers)

The use of **Winchester small rifle primers** in .22 Hornet loadings is documented in Handloader Issue #221 (Feb, 2003), where careful testing showed how these primers affect ignition consistency, accuracy, and pressure behavior. In that edition, Winchester’s primers were paired with modern Hornet components—specifically mid-range bullet weights and clean-burning powders—to validate their compatibility in precision loads.

In the published tests, Winchester small rifle primers delivered reliable ignition even at lower charges and lighter bullets, with smooth, consistent flame propagation and minimal misfires or hangfires. The primer’s performance was especially favorable in loads using powders like IMR 4227 and Lil’Gun, where the .22 Hornet’s small case volume requires clean and efficient ignition to maintain stability.

Accuracy comparisons showed that rifles using Winchester small rifle primers often stayed within acceptable group variance compared to other premium primers. The difference in extreme spread (ES) and standard deviation (SD) was modest in many cases, making the Winchester primers a practical, lower-cost option for frequent Hornet shooters. In some rifles, slight tightening of groups was noted when switching from generic primers to Winchester assemblies—likely a result of enhanced consistency in primer cup quality and uniformity.

The article also advises reloaders to begin with relatively conservative powder charges when using Winchester primers, especially in older or vintage Hornet rifles. Working up with full chronograph and pressure checks is emphasized, as small increases in charge weight can magnify pressure variation more noticeably in small-capacity cartridges like the Hornet, particularly when primer dynamics shift.

Overall, the data from Handloader 221 supports Winchester small rifle primers as a viable and consistent choice for .22 Hornet reloading—ideal for shooters seeking dependable performance without premium primer costs. As always, validation in your specific rifle is recommended.

Source: Handloader Issue #221 – February, 2003