Well, as far as the optics being useable at max power....while I don't have the 4-16x50...I do have the 6-24x50. I have two of these nice babies(big tho at 18") one on each of my 350s, and they are really impressive. I notice that at 24 power, the overall picture starts to loose some light, or things get less clear, and I think some folks refer to this as "grey". I keep mine at 18 power for actual shooting, but use 24x for target verification, to make sure that I'm shooting a ground squirrel and not a burrowing owl. 18x is nice and clear. I haven't needed to use the red or green illumination yet, but it is there for that time when it is needed. What I constantly use though is the mil dots. On windy days and/or really long shots, I can use them to decide holdover, quite accurately. I know that there is a formula that you can use for the mildots, but I use mine with a few test shots first, to see where the pellet is landing, because at 80~100 yards its kind of difficult to rely on a formula with all of the other external influences that come into play like wind/temperature/shot angle. Once I see where the pellet is landing, then I can get much more consistent by saying to myself and implementing, for example, two dots up/one dot right. I recently got a Bushnell YardagePro 450 and found that what I thought were 50~75 yard shots were actually 75~100 yard shots. The fact that I can use a 350M .22 pellet rifle with mildots at those ranges, see the pellets land, and actually hit somethingis really fantastic.
The only thing I dont like about these scopes is the zero locking feature. I would rather just haveregular detent knobs. If I leave the knob in adjustable mode, the allen screweventually loosens to the point that when I want to make adjustments I can't. I then have to get the allen wrench and fool around with the knob until I can get it into adj mode again. This may be because of the gigantic recoilat work on the 350M, I'm not sure.
