 To resolve the controversy, the editors of "Field" magazine decided to conduct a public trial in 1875.The London Trial of 1875 pitted choke bores and cylinder guns of various manufacturers in four categories—Class 1 (large bores, any boring), Class 2 (choke bores, 12 gauge), Class 3 (guns of English boring or cylinders) and Class 4 (small gauges, any boring).The choke bored guns performed better than the cylinder guns in all these tests, and W.W. Greener choke bore guns won the class 1, class 2 and class 4 categories.