Recrowning a 50 Cal Muzzleloader

Last season, the shoulder strap on my muzzleloader broke, and the gun landed muzzle down, putting a decent scratch on the crown. Since I can no longer get an accurate group at the bench, I need to do something about it. I tried to grind it myself with a marble and valve grinding compound, which cut down on the burs a bit but not nearly enough.

Unfortunately, none of the gunsmiths in the Austin area have the right tool to recrown a 50 caliber muzzleloader, so it looks like I'll have to ship it out somewhere for custom work. Does anyone have any recommendations, especially somewhere in central TX?

It's a TCA Omega Z 50 caliber. I'm trying to avoid having to send it to TCA for work except as a last resort.

Bobby Pitchford at Pitchford Custom Gun Works in Waller, TX. (936) 372-9017

DIY
https://www.ebay.com/itm/Qty-6-Crown-Lapping-Gunsmith-Tool-for-Muzzle-of-Barrel-lap/321734837696?_trkparms=aid%3D111001%26algo%3DREC.SEED%26ao%3D1%26asc%3D20160811114145%26meid%3D796e054b8ec045748d688fc1d20d58a8%26pid%3D100667%26rk%3D3%26rkt%3D6%26mehot%3Dpp%26sd%3D333224562710%26itm%3D321734837696%26pmt%3D1%26noa%3D1%26pg%3D2334524&_trksid=p2334524.c100667.m2042

Coning tools are available from Joe Wood, Amarillo, Texas 806-352-3032.

Do a search on the www for Joe Woods Tools and coning in general.