This thread seems appropriate for me right now. I had a club level pistol/carbine match this weekend. We always have a "long distance" stage, usually shots at 100, 200 and 300 yards. I have yet to finish this stage under par time. I use a Aimpoint Pro and it is zeroed at 50 yards which should get me on target at 200 too. I did make my 100 and 200 yards shot but failed on the 300. My most limiting factor was not my red dot. It was me and my nerves + breathing. I'm in good shape, I workout 5-6 days per week but it was hard to keep that dot from wondering all over the target. I finally realized that taking several deep breaths and then holding and squeezing was the way to go but too late. The dot wasn't too big, it was my lack of stability in a forced uncomfortable position that did me in. Maybe some magnification would help but it's out to the rifle range for me for some work.