ANyone here put together an AR upper in 25 WSSM?  I am considering it and would love to hear from those of you who own one, or have even shot one.  What are your thoughts?  I am a reloader, so finding rounds for it in a store wont be that big of an issue.

smallblockfuelie,
  I dont have years of experience with My build yet, But I can tell you this. It's great to have a 20 sec. swap and it's great to own what you see out to 600yds easy. I built up my first load off Hodgdons web site at the beginning load for a 85gr nos bt and had more power than a 22-250 55gr at 3600fps. I put it on paper out to 400yds, Then went hunting. At 85yds its excessive on fur but I think that has to do with bullet construction more than the round. I had My upper  built by Dtech/Dedicated Technology and it shoots sub MOA with My first load. It has a 22" SUM 1 in 10 twist fluted barrel at .930 di. The only thing I wish I would have done is measure my lower specs. It has a little play and doesn't fit as tight as my stk upper. Dont get me wrong it has a full warranty by Dtech&OLY, But it shoots so well You'd have to pry hard to get Me to send it back for a .001 tighter fit. I've got some ingenuity that works fine.(just give your specs. to be sure) I'll know next time. Dont grind like I did, It took me a year to decide.

   The 600yds is my limit not the guns.

Thanks for the reply .... Mike has my order for a 25 WSSM already.