Great old gun. Now a small piece of advice. Do not use +p or hot loads or anything like that in it.
Long time ago in collage I lived in a house with 4 other hippies (I was a strait lace guy with regular hair who would not smoke pot with them.. but didn't care if they did!)
Anyway one of them had this hippie friend who showed me his grandfathers first gun that was given to him by the GF. It was a 1905 round butt .38 M&P. Yep old gun like yours.
Well I gave them the same advice I just posted above. He ignored it, of course, and got some +ps from the Gibson Discount Center store down the road. Came back two weeks later with the whole top strap blown off as well as the top three chambers.
Yes gun ruined.
Just use sedate standard velocity .38 Specials. RNL 158 grain slugs to be precise.
“We can evade reality, but we cannot evade the consequences of evading reality” Ayn Rand