Hey Lee,
I've been looking for a TC Big Boar for years and have ended up with 3 other 58cals instead (Investarms rifle, Euroarms Musketoon, & a Zoli Buffalo Hunter). All are good thumpers and deer/elk droppers. With the patched round ball (PRB) you will not notice any recoil. However I am a Civil War buff and like to shoot minies and they thump both ways. In working up a load I put a sand bag on my shoulder and fire away at the bench. The 58cal (.575, .570, or .562 ball) will knock over whatever you are aiming at.
what do they have for sale and what do they want for it? Is it a TC Renegade or a Big Boar?