It is my understanding only, and not to be used as a guide, and after having a target accu-trigger completely apart and replacing same with a Rifle Basix trigger THAT

I would first do a visual on the Accu-trigger sear spring to make sure it sits correctly. That is NOT the thin spring that looks like it operates the red trigger, but rather the spring that is adjusted with the Savage super duper yellow screwdriver. Also, examine to make sure it has not cracked. If that is ok read the following

When attempting to remove the bolt, pulling on the Accu-trigger and moving the bolt rearward, the pull on the trigger will only move the sear out of the notch and rearward. The bolt will be released back by pushing down on the release lever. There is no actual need to keep the trigger depressed through the whole operation.

On reinserting the bolt, it ain't ever going back in if you feel something such as this- Do not use the bolt. pull back on trigger gently to release sear (if cocked rifle cocked for some reason. Press down on the lever until down as far as it can go, insert a small finger into your chamber on the right side. If you feel anything sticking up, even if it feels like 100th of an inch, that is preventing the bolt, with the bolt rail from the front end of the bolt fitting on the right lower side of the chamber from closing. THAT is preventing the bolt from being reinserted or removed. That protrusion has to be eliminated to allow free travel of the bolt.