What do you know about the AR15?

I got a letter today asking for information way beyond my experience. Maybe you can answer some of these questions:

I'm Lee ****** and I live in Spokane. I've been active in USPSA pistol shooting since March and am having great fun building guns, reloading ammo, and shooting a large quantity of rounds. We do a little 3 Gun activity at a couple of shooting clubs in the area and I am thinking of buying a used AR-15 (Rock River). I caught your blog in a Google search and thought I'd ask for some advice, if you have the time.

Do you reload for the AR? Is it any more difficult or hassling than standard pistol reloading? Is swaging of military primer pockets as easy as I have read it is? Finally, should I look for a .223 or 5.56 chamber?

I'm running a Dillon 650.

Thanks for the help.

If you can answer some of these questions, either post here or send me an email. I'll forward it to Lee and I'm sure he'll be grateful for your help.

Even if you do choose to contact Lee directly, the next reader who has these questions might appreciate the information here, so ... comments would be appreciated.