Straight from the source, here’s what you need to know:

Olin Corporation, through its Winchester Division, is recalling two (2) lots of M*22™ 22 Long Rifle 40 Grain Black Copper Plated Round Nose rimfire ammunition.

Symbol Number: S22LRT

Lot Numbers: GD42L and GD52L

Winchester has determined the above lots of 22 Long Rifle rimfire ammunition may contain double powder charges. Ammunition with double powder charges may subject the shooter or bystanders to a risk of serious personal injury and/or death, or cause firearm damage, rendering the firearm inoperable.

The lot number will be found on the box flap at the location shown.

If you have any ammunition from these lots, please do not shoot it, and contact Winchester immediately toll-free at 866-423-5224 or visit http://www.winchester.com/Product-Service/Pages/Contact-Us.aspx for free UPS pick-up of the recalled ammunition.

This recall effects only lot numbers GD42L and GD52L.

Be safe out there, folks.