anyone else shoot past 40m with their pump pellet gun? i recently acquired a Daisy 880 pump that had blown out seals for about 10 cents from recycling center.. i replaced the blown seals with silicon rubber and doubled them up to take higher pressures, will now handle 15-20 pumps without issue. i then mounted the barrel and shroud solid to where the barrel liner does not move anymore for improved accuracy. i also reamed the air port in the pressure block a little larger and took a dremel to the inside to remove the flashing and to smooth out the airflow into the barrel to get rid of any restrictions that would impede the pressurized air.. i also found me an old steel tube Waver C4 scope and put on it.. so far it is capable of hitting the small plastic golf balls at 30m and hitting the bottom of a soft drink can at upwards of 50m with 15 pumps which now create a small sonic crack using the copper plated pointed pellets.
im not overly happy with how far the scope is unsupported, but that is the only place i could get a good cheek weld and be able to get a full sight picture.