25-100 or so
Harrington and Richardson, an American gun company that made a LOT of inexpensive revolvers. But you need to ask an actual question.
50-125
50-125
100 dollars or so.
50-125
Final Match Pistol Pellets by H&N
Best left to a gunsmith
5-90 usd
Your best bet is to contact H&R.
Impossible to answer without a detailed description and the overall condition.
One of many models made by H&R
10-100 USD or so