Saturday Morning Western Pulp: Complete Cowboy Novel Magazine, August 1949
That looks like an H.W. Scott cover to me, and I know he did some work for Columbia around this time. There are only four stories in this issue of COMPLETE COWBOY NOVEL MAGAZINE: the lead novel by Roe Richmond and short stories by Harold Preece, Richard Brister, and Chuck Martin, all decent writers. I don't care for Richmond's Jim Hatfield novels, but his stand-alone work is okay.