ExactaRoll Double-Pin Roll Crimper (12 ga)

BPI's ExactaRoll double-pin roll crimper 12 gauge

This is our premier roll crimper design which was developed for the specifications of one of our military contractors. It meets military specifications and it will meet yours too.

We've doubled the resistance rollers to make this our most efficient roll crimper ever. The double-pin design of this crimper offers the handloader greater crimp control, tighter sealing, and completed crimps in about half the time. We designed this for a military cartridge manufacturer and we liked it so much that we had to offer it to you too. The spin direction is oriented for clockwise rotation in either drill presses or hand drills.

Crimp depths often vary from load to load, even to a point where it is difficult to produce a proper fold crimp. A compromised crimp can severely disrupt the entire combustion process, thuse reducing performance or even causing a blooper.

Shotshell load performance can vary shell to shell because components such as slugs, buckshot, and full-length field wads, by their nature, are not flexible platforms. Roll crimps adjust to the load (instead of the load adjusting to the crimp) and the ballistic results demonstrate more consistent & sustained combustion. Test lab data show a more consistent propellant burn will yield improved performance.

BPI's Hull Vise and Roll Crimpers are a perfect match. The Hull Vise offers a valuable "third hand" when roll crimping.

• Hull Vise
• 8ga Roll Crimper
• 10ga Roll Crimper
• 12ga Roll Crimper
• 12ga Exacta Roll
• 16ga Roll Crimper
• 20ga Roll Crimper
• 24ga Roll Crimper
• 28ga Roll Crimper
• 32ga Roll Crimper
• .410 Roll Crimper

Roll crimpers can be used with a hand drill or a drill press.

The Easy Art of Roll Crimping:

1. Start with any uncrimped paper or plastic hull. New, uncrimped hulls are available in almost every type and length. Once-fired hulls can be cut down 1/4" and then roll crimped. For example, a 3" hull can be cut down to 2-3/4" in length and then roll crimped. Our Trim Doctor tool was designed for this procedure.
2. Prior to crimping, load the shell as you would any other shotshell load. We recommend using a Wooden Reloading Block during this process to keep loads organized and avoid spillage.
3. After dropping the shot and before crimping, place either an Overshot Card or Clear Overshot Disk on top of the pellets.
4. Secure the hull. Though it does not take much force to hold the shell, this procedure is made easy with the use of a Hull Vise.
5. Place the roll crimper on top of the hull. Our roll crimpers are designed to best work in a clockwise rotation. Start spinning the drill and apply very light pressure. When the edge becomes pliable through a combination of heat and pressure, roll the lip down until it makes contact with the overshot card wad.
   Curing: Your roll crimper will begin to cure as you use it more and more. Roll crimping will become faster and easier as your tool gains experience.
6. Check progress as you go along.

Cartridge manufacturer's tip: Many cartridge manufacturing companies use our roll crimper and some of these clients have told us that they like to put just a single drop of household oil (e.g., 3-in-1 Oil) on the surface of the roll crimper for every few hundred rounds.