Case preparation is a necessary evil in the reloading process. The trim operation for rifle cases is especially time consuming unless you are using a Tri-Trim Gen 3 powered case trimmer. It is designed from the ground up to make trimming cases easy, fast and accurate. The Tri-Trim Gen 3 Case Trimmer itself is machined from 6061-T6 aluminum and a combination of 303 and 416 stainless steel. It has been engineered and manufactured 100% in America for a lifetime of service to the end user. All the aluminum parts are anodized. All the fasteners are black oxide coated and sourced locally.
The cartridge case it held by a Brown and Sharpe type collet by the rim. These types of collets are used in the machine tool world because of their accuracy and repeatability. There are 2 collets for .338 and .375. The cartridge case is placed into the collet base first and held in place while the handle is tightened to secure the case for the trimming operation. It only takes about ten degrees of rotation for the handle to secure the case and this design holds the case in the same position regardless of the rim diameter for consistent trim length. The collet assembly is mated to a carriage machined from solid 6061-t6 bar stock and precision fit to ground and polished stainless rods. The spindle is machined from stainless steel and rides in a set of sealed ball bearings which are press fit into the bearing housing which is also machined from solid 6061-t6 bar stock.
The Tri-Trim Gen 3 powered case trimmer utilizes The Taper-Lock cutter head to create clean, consistent and completely trimmed cases in one operation. The cutter head has adjustable carbide blades that will last a lifetime and leave burr-free cuts on the mouth of the case.
The Gen 3 powered case trimmer uses a powerful single speed DC motor. The DC motor is extremely smooth and quiet and powers the spindle at around 1700rpms. The enclosed aluminum motor mount shroud bolts directly to the bearing housing. The machined belt driven pulley is custom designed to utilize the maximum amount of torque. The motor has an in-line on/off switch for easy control.
o Extremely consistent and will repeat to within 0.002″ with same brand brass
o Brown & Sharpe-type collet
o Taper-Lock cutter 14deg inside chamfer 30deg outside chamfer
o Single speed custom-built DC motor