Accurizing the Mosin-Nagant Rifle
The Mosin-Nagant is an accurate rifle, properly set up. You don't have to settle for mediocre accuracy, and neither do you need to make permanent changes. This is my how-to, and are the techniques I personally use. It is not unusual to see 1.5MOA accuracy from the Mosin-Nagant when using these techniques.
The first thing that should be done is to
smooth the barrel channel using an appropriate sized dowel rod or socket
from a ratchet wrench, wrapped in 320 or so sandpaper. When done, a
straight edge should lay flat along the barrel channel.
Lightly oil the cork bedding on both sides.
Bring lots of ammo and tools to the range. This takes a lot to get right.
I used business card stock on the top handguard. Oil it well.
Move the front sling mounting point back!
If your Mosin needs a bit of help, I sell accurizing kits, located here. The hard work is done for you!
The above video is mine. The picture is not. I believe it to be an English translation of an older Russian or Finnish manual, as it illustrates the methods used by both the Russians in their snipers' rifles and the Finns in their general issue rifles, though the Finns made wider use of shims on the barrel. The felt wrapping seems to be uniquely Russian.