First, good on OP for posting the video and photos of targets when the outcome was less than ideal.
Second, try using the small aperture instead of the large one. Generally speaking, the large aperture is intended for nighttime shooting. Some people like it better for close range, but in daylight it often results in inconsistent shot placement outside of 0-5 yards. Put it this way: training with the small aperture will slow you down and help you with consistent cheek weld, head position, and stance. And it’s what you should have flipped up by default. Once everything else is consistent, which aperture you choose to use becomes less important.
Third, I suggest OP try dry firing with helmet and earpro on. You need to be comfortable with the discomfort of tactical gear, and OP appears not to be. Nothing wrong with taking out additional insurance by sticking some foamies in on the range because breaking the seal happens.
Fourth, slow down until you get comfortable with your setup and stance. For all I can tell, with the big aperture and inconsistent cheek well, OP is using one of the wings of his front sight instead of the center post.
Fifth, the proliferation of helmets and earpro are one of the reasons all those super tall optics mounts have become popular. While primarily intended for passive aiming with night vision, the more heads up sight picture also bypasses some of the annoyance of peltors (and other electronic earpro). Not really relevant to OP because buying more gear isn’t going to solve his irons problem, but worth mentioning. Electronic over the ear earpro is annoying. You have to learn to be comfortable with it instead of fighting it and letting it disrupt your fundamentals.
Sixth, assuming OP is of average intelligence and ability, a few sessions of effective dry fire practice with gear on, if done correctly (use the small aperture and make sure the reps reinforce good habits instead of creating new training scars), should shrink those groups down immediately.
Second, try using the small aperture instead of the large one. Generally speaking, the large aperture is intended for nighttime shooting. Some people like it better for close range, but in daylight it often results in inconsistent shot placement outside of 0-5 yards. Put it this way: training with the small aperture will slow you down and help you with consistent cheek weld, head position, and stance. And it’s what you should have flipped up by default. Once everything else is consistent, which aperture you choose to use becomes less important.
Third, I suggest OP try dry firing with helmet and earpro on. You need to be comfortable with the discomfort of tactical gear, and OP appears not to be. Nothing wrong with taking out additional insurance by sticking some foamies in on the range because breaking the seal happens.
Fourth, slow down until you get comfortable with your setup and stance. For all I can tell, with the big aperture and inconsistent cheek well, OP is using one of the wings of his front sight instead of the center post.
Fifth, the proliferation of helmets and earpro are one of the reasons all those super tall optics mounts have become popular. While primarily intended for passive aiming with night vision, the more heads up sight picture also bypasses some of the annoyance of peltors (and other electronic earpro). Not really relevant to OP because buying more gear isn’t going to solve his irons problem, but worth mentioning. Electronic over the ear earpro is annoying. You have to learn to be comfortable with it instead of fighting it and letting it disrupt your fundamentals.
Sixth, assuming OP is of average intelligence and ability, a few sessions of effective dry fire practice with gear on, if done correctly (use the small aperture and make sure the reps reinforce good habits instead of creating new training scars), should shrink those groups down immediately.