I bought a Rohm 38 special over 30 years ago,,, It was alway reliable and worked as it should.
I didnt shoot it much and it is now a home defender, but not with me, and he is not a sport shooter,
So even now it hasnt been shot much, but Im sure it still works just fine,
In spite of all the reports of its poor workmanship.
I cant think of any reason your gun wouldnot be happy to shoot 22 longrifle, it was made for it,
and if the short went off OK then the 22LR will go off the sameway.
It should be a fun and cheap plinker, buy a box of good ammo and give it some excercise,,, enjoy.