Do these pellets shoot good with the Crosman 1077??
Are these too heavy for the weihrauch hw98 air rifle
No, they should work fine in a 98
Is this pellet too heavy for the Beeman R7?
I wouldn't say too heavy, but definitely on the heavy side of what you'd want to shoot in an R7. You'd have to shoot them and see how they preform accuracy wise.
What is the head size, hope 4.51 or 4.5/
These are most likely 4.5mm H&N will list the head size in the specs if its over 4.5mm
Are these short skirt type?
As in length wise??? Yes these are not an oversized length pellet