Handload some ammunition and see if you can tighten up the groups.
Factory ammo really varies. I have a No. 4 (T) which was supposed to get a 2" group at 100 yards (WW II standards). It got 6" with some Indian made ammo. I thought the gun was messed up but the gunsmith recommended that I try different ammunition. So, I bought some commercial stuff and the group went down immediately to 1 1/2".
Vigilantibus et non dormientibus jura subveniunt. Molon Labe!