I have a 2.5x prism on an 8.5" pistol and a 3x prism on a 9" pistol. Both are fine at 7m (approx) which is the closest I've used them at. The first time was a bit much but in very quick time it just wasn't an issue. None. Quick acquisition and all that. Every 2-3 days I just grab one and simulate to maintain the memory. No biggie. Anything that nearby can be a point and shoot (in most situations) if need be imo.