If one ordered a large enough number, Sako would probably mill to order with round top rather than proprietary bases.
So, Fierce may not have that much action work to do, just screw in a barrel and stick it in a stock.
DF
Do you remember the Magnum Research Mountain Eagle rifles ? Sako actions with a 700 receiver top.
[u][color:#000099]Magnum Research Rifles[/color][/u]