Marlin model 60 micro groove barrell need info about it?

Answer 1

This is a 16-groove rifled barrel, in Marlin's trademarked Micro-Groove rifling. This rifling, with its precision-crowned muzzle, gave the Model 60 an enhanced accuracy over competing rifles using traditional deep grooved rifling, as the bullet was not as severely deformed while traveling down the barrel as with competing 22 LR rifles. The twist rate is 1:16 inches, right-hand. Micro-Groove rifling uses many small lands and grooves rather than 2, 4, or 6 deeper grooves used in the majority of rifles. This arguably adds to the accuracy of the rifle through lessening the deforming of fired bullets traveling down the barrel and indeed the Model 60's reputation for accuracy would seem to bear this out. Although the Model 60 is one of the least expensive 22 semi-automatic rifles sold, it is one of the most accurate examples of a .22 caliber semi-automatic rifle ever produced, due to the 16 groove Micro-Groove rifling. Hope that this helps- Shooty