Hello, new to this and have a lot of questions. After searching the threads I found a lot of answers but still have some questions. I'm pretty sure I'm on the right track but I want to check my understanding before I embark on this and worst case scenario, screw something up.

I just bought a .223 A&B barrel in 1:14 twist to replace my .22-250 barrel. Also bought a Wheeler Engineering Barrel Nut Wrench, Wheeler Engineering Action Wrench as well as the appropriate bolt face and GO/NO-GO gauges. Now as far as I understand this is all the tools and equipment to complete this job. I'm I correct?

http://www.midwayusa.com/viewProduct...tnumber=288765

http://www.midwayusa.com/viewProduct...tnumber=321862

http://www.midwayusa.com/viewProduct...tnumber=710783

http://www.midwayusa.com/viewProduct...tnumber=548296

http://www.midwayusa.com/viewProduct...tnumber=217300

http://www.midwayusa.com/viewProduct...tnumber=217440



DISASSEMBLY

Is heat needed to loosen the barrel nut or can I just use brute force to get it off? If heat is needed how would I apply it? (ie heat gun)


HEADSPACE

Current Barrel.22-250) I am going to be switching these barrels back and forth and want to keep the current headspace dimensions on my .22-250 barrel that's on the gun now. Could I take a case that's been fired in my rifle, neck size it like all of the ammo I have loaded, and fill it with epoxy to use as a "set to" gauge? That way when I reinstall the .22-250 barrel the current dimensions are retained.

New Barrel: (.223) I want to make this a "tight chamber" rifle so in order to do that I should just screw it down on the GO gauge and tighten everything up? I know it will say in the directions but for me it's much easier to understand it when its explained and not in a manual. I will be shooting .223 brass and some 5.56x45 brass. Is there anything I have to watch for when setting the headspace or can I just tighten it down on the GO gauge?
Is there any special reloading processes that need to be done to the 5.56 brass to fit my .223 Remington chamber?


BARREL BREAK IN PROCEDURE

I read somewhere they were using bore paste to break in the barrel. I'm confused as to what this does.
Also, I'm confused as to what exactly bore lapping is.
This is a chrome moly barrel. What would the proper break in procedure be?

REASSEMBLY

I read the sticky "Hand tight or factory tight" but it seemed rather lengthy and controversial. Is there a general consensus on how tight to make the barrel nut?
I have some nickel anti-seize compound that I got from work. Should I put a small dab on the barrel threads or would this possibly throw something off?

Off topic but what kind of bolt grease would you guys recommend?

Thanks in advance. I realize there's a lot of questions for one thread but I thought by answering these questions it will help a lot of other beginners out. After looking through the other threads these are the ones that still went unanswered.