6" hold over at 50 yards for a .22 using 16gr AA field, difficult to do consistently into a two pence sized kill zone
I've made countless irresponsible long shots in my time but for consistency, stood and from the shoulder (and when I'm shooting every day and therefore in the way of it) I was hitting a spinner made from the broad butt of an old silver spoon, so smaller than a two pence, 19/20 @ 25 yards (although I'd only ever shoot 5 rounds off at a time so one miss every 4 days or so, but not by much
), with spring piston guns, take it out to 35y and that average drops to around 10/20, 50y 5/20 unrested, so with me behind the trigger, unrested, 50 yards is much too far.
I think, whilst longer shots are well doable, 25 yards is about the maximum range for me with a .22 springer unrested, to have any usable consistency, even then for shooting fluffy stuff optimal is around 15 to 25 yards; which are typical rabbiting ranges for most with a springer, 25 yards is therefore a long springer shot IMVHO, of course. Interestingly I have similar results with my .177 springers.
Resting a spring gun is different, provided it's not rested on anything solid.