Crowski here has what, like 10 .25 cal Weihrauchs? I'd suggest reading what he has written about them. Maybe he'll chime in.
I only have one HW .25 cal, and it's early days. I can tell the .25 cal pellets don't even sound or feel like pellets when they hit the target. Ka-Thunk! Many hunters over the decades have been impressed at the lethality of the .25 cal springer.
My other .25 cal springer is a Hatsan 135. It would be a swell gun, but it has a lousy barrel. I've been unable to score a cost-effective replacement barrel, the risk of getting another lemon is pretty big. It shoots FTT's at 810 fps, so trajectories are not an issue. Polymags, making 31 fpe, are the best pellet, as in many .25 cal guns.
FWIW, 40 yards is a long range shot for an open sights springer, or most any springer. Who cares if a pellet drops beyond that? A gun that shot "very good out to 40 yards" would make a fine hunting tool. The sidelever Dianas also make power on command, well over what the factory setup yields, if needed. I'd buy a .25 cal sidelever Diana any day.