Mr. Belin. Well, suppose it were a .38 caliber pistol?
Mr. Barnes. Then it would depend on whether you had cleaned your hands or whether you had had gloves on.
Mr. Belin. Well, suppose I were to tell you I didn't have gloves on.
Mr. Barnes. Had you washed your hands?
Mr. Belin. Well, would this make much of a difference?
Mr. Barnes. Washing your hands would make a difference.
Mr. Belin. All right, now, suppose you were to examine me for firing a rifle such as a bolt-action rifle rather than an automatic or semiautomatic. Would you expect to find nitrate residue on my hands that a paraffin test would show?
Mr. Barnes. Chances are smaller on a rifle than it would be with a revolver.
Mr. Belin. Why?
Mr. Barnes. Because your chamber is enclosed.