I'm with Pete this is a real can of worms! I have Many Finns that are very well made and I have others that were rushed to the front after minimal work to get a working rifle on the firing line. I think the time frame and whether or not they were reworked after WW2 is the real dividing line as far as quality of workmanship and accuracy. I have of course some real maverick rifles to that rule too! I try and take each rifle as a individual piece because really one can never tell what it will do till the range trip and different ammo is tried. I am not going to get into the range stories so suffice it to say "Don't ever judge a Finn or Russian or any rifle by the first look!" Take it from there and enjoy all the side bars!
Bill