The "Buntline Special" Wyatt Earp carried was a present from Ned Buntline, a popular writer of the time. Buntline gave pistols to several of the Old West shootists. From what I have read, he did carry the pistol some, but not exclusively. He was said to have carried a 7 1/2 inch barrel Peacemaker as well. Doc Holliday did carry a double action revolver, the Colt Lightening or the Thunder. The Lightening was a small frame chambered in .38 Colt. the Thunder was a medium frame in .41 Colt. In fact, he may have had both. The ever popular Peacemaker was probably present as well, not to mentione a shotgun from time to time.