Gun: .22 Long Rifle NAA Mini-Revolver, 1 1/8" barrel
Training and getting used to the gun:
CCI Long CBs.
These allow one quality practice, with less felt recoil in getting familiar with using the gun.
Ammo:
Like any other firearm, reliable feeding is critical and these too can show 'preferences' as to what they shoot best for POA/POI.
Granted these guns are built like a Swiss Watch, and I have never had a problem with one, nor has anyone I know.
Winchester X22LR is one loading that no matter what it is fired out of, it runs, shoots from good to best POA/POI.
CCI , anything from standard 40 gr to Mini Mag works great!
In the old days, CCI was hard to get locally and therefore the Win load was used.
Now, I use a lot of CCI.
Yep so far just solid LRN bullets
Federal Bulk Pack, the 36 gr JHP - is a sleeper in regard to always going bang and shooting POA/POI.
Dynapoints. Win standard pressure JHP, is a good load, if you can find them.
Main deal is with rim-fire, ammo needs to go "bang".
The above are just some samples I have carried, use, suggest to others.
I do not do or recommend 'bargain loads" as the attention to quality control is not always and the gun may not go bang.
I do not recommend Stingers or other Hyper-Velocity ammunition either.
Sometimes it takes more of a "hit" to set off primer.
Add, POA/POI is usually affected.
Neat guns!
HTH