I was doing a grouping test this afternoon with a 25year old HW80 I have restored ,it did 15mm c to c groups at 30 yards with me sitting on a bean bag and being a bit shakey today! so thats not as good as it gets!
a precharge off a rest will put every pellet into basically the same hole at 30yds so finding the right pellet is critical!
what rifle is it?
and what range?
im sure the guys here can advise on pellet choice for most makes of rifle!