I’ve had my M4 a couple years. After breaking it in has run flawless till today on everything fro AA loads on f so keep field to slugs.
It has been a few months since I’ve been out, cold weather takes fun away. Today, took M4 to range just to run a few rounds of buckshot and slugs along with my AR. 2 of 5 rounds didn’t get fed, like it short stroked. Have not had this issue before with WW buck, these are not reduced power loads. No issues with 5 slugs.
Thoughts? Maybe a bad box? Not what I expected and now wondering about reliability. Am I overthinking this? Will get out a few more boxes of buck in a couple weeks.