Detachable magazines designed for use in X-Bolt rifles chambered in 300 Win. Mag. may experience feeding issues when used with certain types of 300 Win. Mag. ammunition.
The affected magazines were sold between August, 2019 and May, 2020 and were either included with the purchase of your X-Bolt rifle (chambered in 300 Win. Mag. only) or may have been purchased separately as spare or replacement magazines.
To determine whether your magazine is affected by this Service Bulletin, please look carefully at the inscription on the right side of your magazine. If your magazine contains a distinct border around the inscription “Long Magnum” as shown in Figure 1, it is subject to this Service Bulletin and should be returned to Browning. These magazines were available in black (Figure 1), Burnt Bronze Cerakote (Figure 2) and Tungsten Cerakote (Figure 3). If your magazine does not contain a distinct border (Figure 4 and Figure 5) your magazine should function properly and is not subject to this Service Bulletin.