Thanks, guys.  I didn't think to pattern the Rem Nitros with the factory choke, but I did try one with the BC.  It was so bad, I didn't even keep the paper.  Don't remember the count, but it was well below 100.  
I've looked online for a Pure Gold, but they seem to be out of stock for the 835.  I originally looked at the Indian Creek, but balked a little at the price.  Of course, if I'd bought one to start, I might not be looking to try another one.  Does no one have any love for either the SSX or the Hevi?  I can get either of those for around $35.  At any rate, I'll probably leave the set up I've got for this season and look to improve for next year.
I wonder what the difference is between the SSX and the Bone Collector.  Both are Truglo and .670 if I'm not mistaken.