Never measured, but I have seen it. Maybe an inch or two at 50m from what I remember? It's not a big "distance", but it's not zero. Pressure on the fore-end, like from leaning into a bag, can make a significant deviation as well.
Regardless, I'm looking forward to trying this red dot mount out tomorrow. Being barrel mounted, take-down shouldn't be an issue.
https://flic.kr/p/2m33VBa https://www.flickr.com/photos/162118399@N03/
I got that exact same mount, just using a Vortex Crossfire RDS. Got it all zero'd in and seems to work great. I'm sure the POI shift is not huge with the receiver mount but I like the piece of mind of this setup. Won't work for scopes of course but for an RDS with infinite eye relief it's great.
Was worried it might take a little longer to pick up the dot with with further away but didn't seem to be a problem in practice.
It almost allows a co-witness of the iron sights as well. You lose some of the clarity but you get enough to make shots in a pinch.
Here's some 25m 3-shot and 2-shot groups with mine off a front bag only.
Last edited:





















































