Nice rifle.
This was your first range session with it, so lots of variables involved to cause erratic numbers.
You have fired brass now, so how do they look ?
Can you push them harder ?
Reload some rounds with different charges and see what happens.
Still erratic, try a different projo and powder.
As was said above, if it's shooting bug holes and you're not going to take it long range, don't worry about the numbers and be happy.
Clean that sumbitch and have some fun.
SJC
