Of course a picture of the action would be the best way to go.
First, I popose you to identify the action used for making this rilfe;
Does the front receiver ring have a Husqvarna roll stamp with a date? If so, it's an ex-military M/38 receiver (of the small ring design).
If there's no date, you have a civilian or "commercial" action. It can be of three different actions;
M/94/38 - Is there a thumb cut-out on the left receiver wall? This action was used in two different configurations; one with and the other without the thumb cut-out. The action screws distance must be 8.500" (it's the two bolts retaining the magasine to the action)
This action is a Small Ring.
The FN M/98 action also have both solid left side receiver rail and thumb cout-out. For easy identification, remove the bolt and look under it; it there are large oblong holes, it's a M/98 action. The floorplate does not have a hinge.
This action is of the Large Ring.
The action screws distance is 8.750".
Finally, on the left side of the receiver, if there is only a very samml tab as a bolt release catch, it's a 1640, wich is very similar to the FN M/98, but of the
Small Ring Design. Actions screws are 8.750" apart one from the other and have a hinged floorplate, of alloyed metal or steel.
Below is a picture of both action side by side. Top one is a "commercial" M/38 and bottom a CG-made (M/94) used by Husqvarna on their early "commercial" rifles. Both are in fact, the same action but under different configurations. Also note they tried the "commercial M/38" to produce Target and Sniper rifles in caliber 7.62X51, but did not go further.
Both these actions are small rings.
The picture below is the bolt release latch of the 1640 series;