You are correct about the bolt handles. I'm sayiny the receivers do not need squaring up.I have no delusions about being an expert with bolt guns, I'm not. But even I can see that the extraction timing on every Remington I pick up is screwy. I bought another 870 fall before last and the thing is a rust bucket even though it is clean and I even bought and used the Remington brand oil cloths. It also has the sharpest edges on the metal I have ever come across on a firearm. I own an older model 870 that is a very different gun, much better! At this point I personally am steering clear of anything Remington.
Tikka T3's are nice guns, if the A7 is even slightly better I would go with that.
Just my two cents.
You are correct about the bolt handles. I'm sayiny the receivers do not need squaring up.