The 358JDJ is a pussy cat as handcannons go IMO, so doesn't need to be braked unless you are recoil sensitive or just want one. SSK offers both their Arrestor and Larry Kelly's M-N-P brakes, the later most often recommended for shorter barrels or shooting cast and available in both 2 and 4 port versions (and also a Super Arrestor for the true handcannons). I think SSK's current prices start at $110 for the Arrestor/Contender and $150/Encore, $125 for the 4-port M-N-P brakes for either barrels with the 2 port probably a little less. The custom dies for the 358JDJ are still $68. Be aware that since not all TC factory barrels were created equal, with some slipping through QC that shouldn't have, SSK will not rechamber one that doesn't "measure up". Been a long time, but if memory serves JD first advertised the 358JDJ as shooting 220's around 2250 in his custom barrels, and he usually suggested less for rechambers. But that was a long time ago so they certainly may have proved that they could do better than that. Regardless, if you get one have fun with it, and if you scope it do it right with a scope that has proven it can handle it.
L.