Not a HVA, unless it's been scrubbed of stampings and the floorplate / trigger guard replaced and an adjustable trigger added.
I personally lean toward a Las Corunas (Santa-Barbara) action, the trigger group would be a good giveaway but from the outside, it doesn't look like a Sako trigger (used by FN as their adjustable trigger). If it has the Sako trigger, it really can be a Sako High Power. In any case, if it's a FN made action, it should have Belgian proofs or typical markings under the wood.