I just wanted to publicly thank David Sadler. I had purchased a TC Custom Shop 6mm TCU carbine barrel with a 1:10 twist from him, and it was even better than described and at a very good price. To boot, he sent me the barrel on the very same day I sent out the money order , even though I assumed he'd just wait for the payment before parting with the barrel.

Thanks, David. I appreciate it...

It may be a while before I get to do any serious work with it, but I'll certainly post the results ehre.