I can't speak for your model rifle, but my Mossberg 140K (made between 1955-1959, I think) is an excellent shooter. I don't waste my time at 50 yards, I enjoy shooting it at 100 and 200 yards :grin: with a combination of a Marbles' rear peep sight and a Williams Firesight front sight. Mossberg seems to have made really good .22s, enjoy it. :grin: