I don't know anything about the ravin scopes so this maybe 100% wrong. Most scopes are sighted in at 20 yards and speed ring adjusted at longer range.
The cross hairs were stuck in your scope. After adjusting tap on the scope before shooting. Ive had that happen numerous times. That is not a good scope. 329.00 list and you can find them for 50.00 I've had four fail. I like the reticle and speed ring but it is a cheap azz scope. Wait for it to get water in it or get blurry where you cant tell a deer from a cow when looking through it. It pisses me off that the come on a 3000.oo crossbow.I recently picked up a Center Point Patriot 415 package. I was not satisfied with the scope that came with the package so I picked up a Killer Instinct Lumix Speed Ring 1.5-5x32. I wasn't happy with it either as the parallax was severe and it had focus issues as well. After much research on this site I decided to buy a Ravin take off scope from Wyvern.
I got the Ravin scope installed this morning and began the site in process. I got it dailed in at 50 yards using the turrets and then moved to 30 yards making adjustments using the speed ring. I had the Patriot shooting tight groups at 30 & 50 yards.I was extremely happy with the results and then I moved the target back to 60 yards and that's where the trouble started. My 60 yard POI moved about 8 inches to the left and 2 inches high. I did not adjust the turrets or the speed ring. I moved the target back to 50 to see how it would shoot using the center crosshairs. I shot a very tight group but it was 10 inches or so to the left and a little high. I checked the scope mounts for tightness and looked over the bow closely but nothing appeared out of order. I made the necessary adjustments with the turrets to get the POI back in the bullseye at 50 yards. It's shooting tight groups again at 50.
What in the world happened? I'm scratching my head over this. I really like this scope but I'm confused as to what happened.
Part of problem is after you get it dialed at 50 yards, you need to go back to 20 yards not 30 yards with Ravin scopes and make adjustment with only speed dial at 20 yards. This would account for height being off. Being that far left could be having the scope not level when mounting it or canting it while shooting. As others have stated make sure your crossbow is level when sighting in your crossbow. Also use only one arrow thru out site in process as a different arrow may not shoot quite the same.I got the Ravin scope installed this morning and began the site in process. I got it dailed in at 50 yards using the turrets and then moved to 30 yards making adjustments using the speed ring. I had the Patriot shooting tight groups at 30 & 50 yards.I was extremely happy with the results and then I moved the target back to 60 yards and that's where the trouble started. My 60 yard POI moved about 8 inches to the left and 2 inches high.