Anyone know much about Mossberg rimfires? I picked up a model 144 with T-Handle bolt, Lyman target sights, and has the heavy barrel and hand stop on the stock. I am searching for history on it, any comments on its accuracy potential, etc... thus far I found a listing that dates manufacturefrom 1949-1954, but stated front ramp sight, mine has front aperature with changable discs. I have the original Lyman box with a variety of different disc sizes. Appreciate any input. Thanks!