I have built quite a few rifles on Savage actions and here is what I would look for. The newer models of 10/11 or 110/111 are the easiest to find accessories for. Savage has changed the bolt pattern a couple of times on the short actions. The newer ones made in the last several years are 4.4" spacing and are called "centerfeed" actions. These are the easiest to work with if you plan on building your rifle with Detachable bottom magazine. The older centerfeed models are 4.27" spacing and are called "staggered fee". There are still some aftermarked options to allow a DBM rifle on these actions, but they are rather expesnive and limited. The long actions should all have the same screw spacing. Due to the floating bolt head, barrel nut, accutrigger, etc, Savage makes a great platform to easily build a very accurate custom rifle out of. Plus, there are many very good barrel manufacturers making prefit barrels that you can install easily. The stock choices are not quite as robust as for the Remingtons, but there are quite a few option available from budget up to expensive. You can visit savageshooters.com and they have all the info you could ever imagine for a Savage. Good luck.