I also have a 144 LS-B. These have the heaviest barrel Mossberg ever put on a rimfire.
Mine shoots very well, but is not quite in the same class as my 40X or SUHL 150.
Using RWS Rifle match, it shoots about .3" average at 50M, which is not shabby.
I would not hesitate to take it to an informal match.
Regards, Eagleye.
I have a 144 LSB . They are great guns. However, the barrel on my 46Bt target rifle is heavier. I think there were less than 900 46Bt's made.
Yes, there were just over 800 46BT's made. I also owned one, and it is strange that your 46BT barrel is larger than your 144LSB, because mine was not.
Mine was exactly the same diameter as the 144 LSA I owned at the time, and that is just a bit smaller than the LSB.
Can you measure your two at the muzzle and post the respective diameters, please?
Regards, Eagleye.



























