My turret has 3.2mil travel. I get the full 3.2, as the scope itself has plenty of room for that. I believe 4.8 mil is squeezing almost every bit of travel out of the erector, so if your zero is off-center at all in the wrong direction you wont get full travel. If so you may need a very short rail.—the issue may be finding a rail short-enough. Sounds like some people do need something, many do not. BUT regardless of what rail, the design of the turret limits travel to 4.8 mils, so its not possible to get any more elevation than this. What yardage that translates to is entirely dependent on your gun. 22” wsm I bet you get past 600 easy, if not farther. I get 500 out of a 20” 6.5creed with 3.2mil shooting factory ammo at low elevation. 4.2 gets me to 600, 4.8 to 650. So you’ll have more range.
The reticle is fine at lowest magnification. Not particularly bold compared to a regular duplex, but similar— it’s fine in timber for me even if it’s not ideal. You likely dont even need the illumination. Illum is just ok, the low settings are too low for anything other than full dark, high (daylight) settings have a lot of bleed. But for twilight use theres a couple mid range settings where its ok. Ive never needed it.