Re: 722 action vs the 700 short action
The only problem you will have, is with the safety lever on the trigger and where the stock is inlet for the safety. The 722 doesn't have a relief cutout in the action's tang like the 700. Other than that, the barrel will screw on, and the action holes will line up. The 722 also has the lower rear bridge like the very early 700s, so a 1-piece base may not fit right, and the height might be slightly off on a 2-piece set.
If you ran a jewell with the bottom safety it would work wonderfully. Otherwise you will need to widen the inlet in the stock and find a 722 trigger.
Dave