Can You Mix .22 WMR And .22 LR Ammo When Hunting?

Cartridge Specifications

When hunting with .22 caliber rifles, it’s crucial to understand the differences between .22 WMR and .22 LR cartridges. The .22 WMR (Winchester Magnum Rimfire) has a longer case length and is loaded with a more powerful propellant, resulting in a higher muzzle velocity (approximately 1,900-2,200 fps) and more kinetic energy compared to .22 LR (approximately 1,200-1,600 fps). The increased power of .22 WMR makes it a better choice for hunting larger predators, such as coyotes, raccoons, and small deer.

Hunting Applications

For hunting larger predators, .22 WMR is generally preferred due to its higher kinetic energy and deeper penetration. However, for smaller game like rodents or birds, .22 LR is often sufficient and may be a better choice to minimize collateral damage. When hunting with .22 caliber rifles, it’s essential to match the cartridge to the intended target and hunting conditions. Failure to do so may result in reduced effectiveness or increased risk of wounding.

Safety Considerations

Mixing .22 WMR and .22 LR ammo in the same magazine or chamber can lead to unpredictable and potentially hazardous situations, especially in a high-stress hunting environment. The difference in pressure and velocity between the two cartridges can cause the weaker .22 LR rounds to fail to fire or even rupture, while the more powerful .22 WMR rounds may prematurely fire due to the increased pressure. To avoid these risks, it’s essential to use the same type and caliber of ammunition in all your firearms and magazines.