Sure I’ll catch some snark...but here goes. I’m a newb...only been shooting for abt a year. Took my Sub2k (9mm Glock version) out to the range yest. Noticed my front post had rotated off the detent. Locked it back down, figured I’d want to re-zero. Put these targets 25 yds downrange. Standing, no bench rest. I’m 58 and eyesight’s not what it once was. I’m sure many more experienced shooters do much better. But this was pretty good for me.