https://www.brownells.com/search/index.htm?k=ruger+latch&ksubmit=y

Don't buy the over sized latch for your gun. A new factory latch
and pin will tighten it up if your cylinder isn't badly worn. Can you take a good close up of the bolt tab on your latch and also measure it? The oversize latch in a stock gun/chambering can take a long time to fit correctly because it also affects timing. It is great to help control movement in a boomer especially when blocked for lateral movement.

"A quiet hit in the right place is better than a loud miss in the wrong place followed by 10 more shots on the run"

I was a handgun hunter, when handgun wasn't cool.....