I've got 50mms on all but two of my Handis, most with sun shades, cause my old eyes need all the help they can get. I never had any prloblems with any of them except the .30-06. The factory installed scope mount shot loose in less than 50 rounds. It ticked me off at the time, cause I had to take it apart Lok-Tite it, put it back together and re-sight it in.
Pete