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Fifty Caliber Tools

State of the art 50 BMG bullets are being built on Corbin swaging and reloading presses as you read this. For more than 25 years, Corbin has provided benchrest quality 50 caliber tools for bullet making and reloading, not only for military and security services of the U.S. government, but for our allies and civilian gunmakers and shooters. Research projectiles built on Corbin equipment during the Viet Nam war simulated Russian and Chinese anti-tank and heavy machine gun projectiles to help companies such as DuPont Chemical Textile Division develop light-weight armour for our helicopters. If you're just now reading about Corbin's 50 caliber equipment for the first time, it's probably because we've been too busy supplying our long-time clients to advertise the fact. As with the entire spectrum of calibers from .123 to 1-inch Gatling, from airgun pellets to shotgun slugs, from paper-patch rifle to cowboy action, from winning benchrest championships to arming air marshals, Corbin continues a three-decade legacy.

CSP-2 Mega-Mite Press
The Corbin Mega-Mite press provides a high precision press with Torrington needle bearing links and a hardened and ground alloy steel ram for both reloading (in the 6 inch stroke setting) and swaging (in the 3-inch stroke setting). The press head is threaded for 1-1/2 by 12 thread per inch, and the ram is threaded for 1-inch by 12 tpi.

The press comes with a ram extension/adapter with 7/8-14 threads, and a conventional RCBS T-slot adapter for your other calibers. An optional screw-in 50 BMG shell holder can be added, which fits directly into the adapter. Or, get the optional primer tool which comes with the shell holder, and can be used in the same setting both to knock out the old primer and to install the new one.

The Mega-Mite press (CSP-2) can be mounted directly to your bench top, or you can get it with the optional self-supporting floor stand (no need to mount the stand, as your own body weight standing on the attached deck holds it in place while operating the press). When purchased with the press, a discount applies to the stand.

Priming Tool PT-50
The Corbin 50-cal. priming tool (PT-50) is unique in using the CSP-2 press to apply precise, delicately adjustable priming power. Depending on the setting you choose, you can select seating by "feel" or by absolute position control. The same tool can be kept in place while the empty fired case is deprimed! The priming rod retracts as the ram is raised, opening a spent primer port in the tool base. Your depriming/sizing die in the press head then pushes the spent primer out, and it drops through the shell holder, through the port in the tool, and out the side. When the ram is lowered, the a new primer can be pushed into the primer pocket without changing any adjustments...just slide the case out, clean the pocket, drop a new primer into the top of the holder, slip the case back in and lower the ram to push the new primer into the waiting case.

The PT-50 comes with a SH-50 shell holder, which you can use in the tool with the priming punch removed, for other reloading tasks. Corbin's shell holder is made from alloy steel, hardened and ground, with the precision you expect from the world's leading benchrest die-makers. The high strength steel alloy allows for a thinner than usual top section, which in turn permits the case to be sized further toward the head than with most conventional shell holders, helping to prevent jams.

SH-50 Shell Holder
The Corbin SH-50 shell holder is made from alloy steel, hardened and ground, with a thin top that allows you to size more of the case head. It is threaded 7/8-14 tpi, and screws directly into the Corbin reloading adapter bushing or the similar PT-50 priming tool base. Certain other large reloading presses, such as the Rockcrusher by Old Western Scrounger, have used 7/8-14 threads for their rams, which would accept this shell holder directly.

CSP-2H Hydro Junior Press
The Corbin Hydro Junior Press (CSP-2H) is the next step up in making 50 caliber bullets (or reloading). It provides tireless, pre-set stroke length and power settings, allowing an operator to work a full shift without undue physical strain.

A hand press works nearly as fast until the operator gets tired, while the power press continues at the same rate. The power press also has precision pressure measurement and control that does not change with the personality, physical condition, tiredness or other personal changes that can affect how a hand press "feels" at any given moment. The hydraulic press applies the exact pressure set on the dial, regardless of the physical condition of the operator. The main advantage of the hydraulic press is not just brute strength, but consistently applied power over the full stroke length.

Electrical position control sensors determine the start and stop of each stroke, so you can establish the optimal ram travel for a given operation. With a hand press, ejection is always at the bottom of the stroke and full power only takes place when the ram travels the full distance to the top. With the Hydro Junior, full power is available at any point in the stroke, so there is no need to use any more of the stroke than is required for the job at hand. This allows the press to run a faster cycle time on some operations than others (if you only need two inches of travel, there is no need to wait for the press to take the full six inch stroke, and thus you can save 2/3 of the time that would otherwise be used).

CHP-1 Hydro-Press
The Corbin Hydro-Press(tm) is the world's most popular and powerful bullet swaging and reloading press for custom bullet makers. It builds bullets as large as 1-inch diameter with ease. The reason to consider the CHP-1 instead of the Hydro Junior is the additional control and future expansion interfaces built into this top of the line model.

The CHP-1 uses electronic position sensing for the top of stroke, bottom of stroke, and an intermediate loading position. It can be set to automatically run a complete cycle and then wait for you to pick up the finished bullet and insert more components, with pressure and dwell time controlled by the press. Three pressure transducers, three non-contact electronic position transducers, and top panel precision timing (with dwell time in milliseconds and seconds) give you more control over critical stages in the operation.

The press provides built-in interfaces for operation and control of conveyer belts, jacket strip uncoiling machines, and other accessories that you may want in the future for making your own drawn jackets. It can be equipped with the JMK-2-H semi-automatic strip jacket drawing system, which feeds up to 150 pound pancake coils of jacket material into the press, automatically lubricating the strip, cutting a disk from it, and drawing the disk into a cup without operator intervention. A conveyer carries the cup into a bin for storage until it is processed further, while the scrap "web" of strip is cut into pieces and dropped into a recycle bin. The interfaces for these operations are not present in the lower priced Hydro Junior. A key lock switch prevents unauthorized persons from running the Hydro-Press, which can be locked in manual mode to prevent changeover to automatic operation.

CTJM-1-H Jacket Maker
The CTJM-1-H Copper Tubing Jacket Maker set lets you make high quality .50 caliber bullet jackets from 1/2-inch copper tubing. The best tubing is usually refrigeration or steam line tubing, rather than common water tubing, although the standard tubing available in hardware stores can be used.

Copper tubing is first cut to desired length (bullet length plus about a quarter inch to make the bullet base). One end needs to be burr-free but the other can have a burr or roll-in edge. The burr-free end is slipped over a precision honed steel punch, and pushed into the jacket making or end rounding die. The die rolls the end over at an angle, nearly closing it. If the tubing is larger than the caliber (.511 typically) it must be pushed through a reducing die, but typically 1/2-inch tubing is sufficiently under final diameter to work without a draw die. The end-rounded tube is annealed (heated to about 1200-degrees briefly), allowed to cool, and then pushed into your regular core seating die using a special end-flattening punch (or into your BT-1 die if you are making a rebated boattail bullet).

The end flattening punch has a shoulder which must push the edge of the jacket, so the length of the punch tip must be matched to the jacket (the jacket is longer by the amount that is to become the base). In order to make various lengths of jackets, either several different length end-rounding punches must be ordered, or a single adjustable length punch can be ordered instead. The adjustable length punch lets you set the tip length for any reasonable jacket length. It is cost effective when you plan to make three or more lengths.

PCM-1 Power Cannelure Tool
Cannelure grooves can be rolled on .50 BMG bullets by using the PCM-2 power cannelure machine. The PCM-2 can handle up to 100 bullets per minute, applying a precision factory-like serrated cannelure groove at the exact position and depth you choose.

With other optional components, the PCM-2 can handle calibers from 224 to 1-inch Gatling. It operates on 110-120 volt 60 Hz AC power, with a 1/4-HP motor running an oil-filled gear grain, and forced air cooled for continuous operation.

With optional cartridge feeding accessories, the PCM-2 can also roll precise cannelures on cartridge cases, so that the bullet won't push back into the case during feeding in auto-loaders. These custom built PCM-2 adaptations have been successfully applied to cartriges as diverse as 9mm and 45-70 WCF.

The PCM-2 comes with a hardened cannelure wheel with standard .050-wide knurled pattern, but custom wheels to roll any shape or style of groove can be ordered, including multiple grooves, crimping grooves with one sloped side and one right-angle side, radiused grooves, and different depths of grooves. The depth and position are precisely adjustable. With proper cannelure wheels, the PCM-2 can handle from 224 to 1-inch projectiles (224 to 458 is covered by standard size wheels; larger calibers also require a special backing plate).

CBP-50 Corbin Bullet Puller
Smoothly, safely remove bullets from loaded rounds without marking or distortion, using the power of the reloading press. No sharp spring-loaded fingers to marr the bullet, no jarring impact to break up the powder grains or crack the primer pellet (or ignite a pyrotechnic, tracer, incendiary, or explosive payload). Combines the speed of a commercial spring loaded puller with the clean, marr-free grip of a collet pullet without the slowness of screw tightening and unfastening on every round. Also available for other calibers from 0.10 to 20mm on special order. See prices at PRICES.HTM.

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