For some reason I had a really hard time getting behind that scope. That's even with the adjustable cheek piece and LOP on my Xylo chassis. I always felt like I was fighting that scope. I moved it numerous times trying to get the eye relief right without success. I'm no expert, but I've been shooting most of my life so IDK. I also found the 2.5x rather useless. It works better with the illumination on, but it's not daylight bright so it can really only be used in lowlight. I spend a lot of time behind my .22 so it was driving me crazy. No joy! It's going on an AR-15 and if I still hate it, it's going down the road. I've had the 432 for a day and I'm much happier.