cdb1
Member
I believe so.
According to the Marlin website all 336 variants still use micro-groove rifling. Mostly because they shoot the .30-30 and .35 Remington cartridges, I would think. Not many people hand load lead bullets in these, so they still use micro-groove, which works great with JSP bullets.
Since its' a bread and butter production rifle sold everywhere, they probably don't want to retool to Ballard rifling when it isn't necessary.
Many customers wouldn't notice or care one way or the other anyway.
The 1895 and 1894 series rifles are a different matter, and all have Ballard rifling.
Remington doesn't seem inclined to change JM Marlin rifling or twist rates that existed before the big changeover, even if the 1894 .44 Magnum and .45 Colt could benefit from it.
Btw, the microgroove is no good for cast is another interweb myth. I load a lot of cast in a 1968 30-30 microgroove and, as long as the bullets are sized .310" and kept under 1800 fps, they shoot just fine.
So the current production is generally back up to snuff ?