I've just put a Nikko Stirling 8-24 x 50 panamax on my HW100 in .22 and found that I can't get any more elevation adjustment to get zero at 38 yards with 16 grain pellets.

Doesn't sound right to me?

I haven't moved the mounts as the previous scope was a 4-12 x 50 mount master.

38 yards is not really long range, even with a heavy pellet?

Any ideas?