Marlin 39-A

[bobbyjack]

My Marlin 39-A is a 1948 model and is Ballard and not Micro-groove,It is very accurate. Why did Marlin switch and go to micro-groove? Any advantage?

Bob

 

[Mount Sweetness]

It seems that all the "improvements" have not improved anything and in some cases are causing problems (rebounding hammer/misfires).

 

[pharaoh2]

The Micro-Groove rifling causes less distortion to the bullet than traditional rifling. Everyone I've ever owned has been very accurate. Nothing wrong with the old style though.