Sorry, yes, the a-bolt wrench fits the x-bolt better than the Reminton wrench does. Put card stock (business cards work well) in between the wrench and action to keep from marring the finish.
Leave the bolt in when you snug the wrench onto the receiver and crank on it. It supports the receiver and helps keep you from distorting it when you snug the wrench. Don't get too western with the torque on the wrench bolts, something like 15ft-lbs is plenty. On a Winchester, Mauser, Enfield, you remove the extractor then put the bolt back in. I've seen a couple of receivers ruined after a ham fisted hillbilly crushed the ring with an action wrench. You're also distorting the ring on the barrel threads that you want to move easily. Kind of self-defeating.
Don't use 90ft-lbs to put the barrel back on with. Use 20-40ft-lbs. Or basically, touch, and give it one good snug up. That will hold fine and you can just use a big adjustable wrench next time for an action wrench. People think it needs a lot of torque. Hand tight is really all you need, the torque is just to keep it from vibrating loose. Systems like the switch lug wouldn't work if you needed torque.
Jeremy