The L.E. Wilson Trimmer Case Holder provides the ultimate accuracy and uniformity for trimming your cases. The unique design of the case holder supports the case body, much like a chamber would. Pistol cases have practically no body taper, and require a special type holder, which is constructed very much like a neck sizing die. Cases cannot be bumped in and out of these holders like most rifle cases, but must be forced in with a light arbor press or mallet and must be driven or pushed out. These case holders are made longer than the cases, to be trimmed so that cases may be forced clear in without damage to case mouth. The Case holders are counterbored at mouth end for cutter clearance. You will find the case trimmer somewhat slower on pistol cases than on rifle cases, but it will produce a very uniform case length with consequent perfection in crimping.