I have a Mosin M44 and a Finn M39. The Finn is a parts gun although it does have a B barrel on it. Very accurate for a milsurp with surplus ammo. The M44 is very smooth to operate, not as smooth as an Enfield but, nice enough considering the gun and it's lineage.
Take a look at
http://www.mosinnagant.net
You can find all sorts of good info for mosins of all shapes and sizes, plus good info on the proper care and feeding of them as well.
According to Jeff Cooper, the idea behind a scout rifle is to purposly limit the capacity of the primary weapon, i.e. a bolt-action rifle, in order to keep the scouts from trying to engage enemy troop formations. The thinking was and is that if they had a high capacity semi auto or automatic they would be tempted to engage. In other words, hide and observe, not shot and scoot.
If you were in a position to stockpile or transport large or relatively large amounts of ammo, I'd say go for a Mosin. If you are going to be in tight quarters, that's a different story. I would not want to clear a house with one. Yeah, the Ruskies used them to great effect in WW2, they cleared houses with them, they killed lots of Germans with them, but there are too many other alternatives available if your situation presents that possibility or something similar. I'd go in with a handgun before I tried to use a bolt gun.
The evolution of tactics has changed a lot over the past 65 years. The idea of using a M-4 type long gun is the current doctrine of choice. Once again, yes they did it in the old days, the also taught shooting a handgun with one hand and evaluating your target before shooting it again.
If I had one gun to take on a limited budget, I'd take a M44 or M38 for a long gun. If I had to bail, I would take both of mine, I'd also take my AR. Then again, I'm not planning on having to travel via the shoe leather express to get out. I fully intend to use my truck and trailer.
Best regards,
Wheeler
All things being equal, I would NOT want even a novice shoter taking pot shots at me with a 7.62x54R in ANY format. That is a mean round to be on the receiving end of.