 OLDWICK, N.J.--BUSINESS WIRE--AM Best has commented that the Financial Strength Rating of B Good and the Long-Term Issuer Credit Rating Long-Term ICR of bbb of Southern Pioneer Property and Casualty Insurance Company Southern Pioneer Jonesboro, AR remain unchanged following its acquisition by Biglari Holdings Inc. Biglari Holdings Inc. officially acquired Southern Pioneer, an insurer offering commercial property, homeowners, dwelling and other coverages with a presence throughout 