This isn't from TN, but I recently took a nice Razorback that weighed 205 lbs... He was actually very run down from chasing sows and fighting and the owners said he should really be in the 350 - 375 lb range... But, as is he was 205 lbs.
There was another nice Razorback taken on the same trip that was 170 lb, healthy but still had very little fat on him either though. Here is a pic of him...
So, given the Razorback or Russian was a bit healthier and had a bit more meat on his bones along with a bit of fat, he might be a bit smaller. But, this will give you an estimate as to what you would be looking at when it is time to drop the string. I don't know about the TN Boars, but I know these have a very dominant presence and things could get real dicey in a hurry if they pushed the envelope!
The one I shot was running with two others that were very similar to the one Danny shot, and when mine went down they stomped a mudhole in him for about a minute. Reminded me of Turkey hunting when you drop a Tom out of a group, they all jump in and beat the tar out of their fallen brother.
Hope this helps...