A fella by the name of Bob Hoyt re-bore's T/C muzzy barrels for cheap. Not expensive at all and its super easy to find a rusted out .50 or .54 cal, send it to him and have it re-bored to whatever you want. I found a cheap rusted .54 Renegade barrel that the exterior is in okay shape that I'm going to send in and have a .62 smooth bore made.

Awesome post. I hope you have years of enjoyment out of your new .58. Those Investarms are great rifles.

Todd