oh man, just had a little fun with my holosun 507c grendel bolt action with gongs out to 400, I have it zero'd at 200 and decal showing 25 yard holds to 400, we did speed drills at 50/100 and then 200 freehand with surprising hit ratio, then turned the brightness down to minimize dot and went prone on the 300/400 gongs and that was a hoot, you have to work hard to miss at 300, had right to left wind, did my last 6 in two quick groups at 300/400, at 300 did a fist size group just left side of dead middle of gong holding bottom of dot on top of gong (wind right to left), then at 400 it's a 30" holdover and only 10" gong, went 2 for 3 on it quick catching left side and missed number 3 left side (me or wind), would be a lot easier to reference on an animal...that was a blast, just about ready for my first Palma match lol, confidence will be high going into the season, may not need the scoped rifle at all, highly recommend this dot stuff, my bud with a 308 he's setting up for his no magnification iron sights rig now wants the dot over the irons, and not any dot as he's run cheaper stuff, he wants the holosun and green, was surprised by it(quality, no battery required solar, and size of dot) and the color against a full green and lush backdrop, but it's also his preferred archery fiber optic color as well