making overshot cards in stock

That is a great use of boredom. I have made over shot cards from just about everything including milk cartons, frozen food containers, house siding (Tyvek), and various plastic food containers.

According to the guys over at Ballistic Products, the overshot cards are supposed to help patterns. Some believe the overshot cards blow patterns, but my own very non-scientific testing I did not see any difference in patterns.

The overshot cards are handy for adjusting crimp especially with cheap or over-used hulls. They are handy for keeping shot from escaping from a pourly crimped hull, and are damned expensive from the commerical guys.

Overshot cards are very handy when you roll crimp unless you are loading pumpkin balls. Some reason the shot just pours out of the hull when you forget the overshot card with a roll crimp. Damn nuisance to unroll the crimp and scoop all the shot up.

Our custom logo overshot cards are the favorites of our ballistic lab. We use a heavier stock material (.045") and apply a water-repellant coating to both sides. The result is an attractive and highly functional overshot card.

Use: Simply place an overshot card on top of the shot charge just before crimping to improve overall crimp quality and seal in small shot and/or buffer. Excellent for use with BPIRoll Crimpers.

Excellent for roll crimpsOur testing lab has proven that poor crimps can alter the performance of an otherwise good load. Overshot cards always produce better, more consistent crimps and this consistency is demonstrated in the standard deviation of loads in our lab. Our ballistic lab recommends overshot cards for better crimps in all loads.

The clear overshot card for roll crimps. You"ll know instantly what is inside every load. This is an excellent topcard for spreader wads. The material is frangible and breaks up immediately upon shot thrust. The stable platform offers a near-perfect surface for ideal roll crimps -- every time. Use in any overshot card application. Designed with a pressure-relief notch for high-speed loading.

Place an overshot card on top of the shot charge just before crimping to improve overall crimp quality and seal in small shot and/or buffer. Excellent for use with BPI Roll Crimpers.

Our testing lab has proven that poor crimps can alter the performance of an otherwise good load. Overshot cards always produce better, more consistent crimps and this consistency is demonstrated in the standard deviation of loads in our lab. Our ballistic lab recommends overshot cards for better crimps in all loads.

Clear Overshot Disks (either plain or printed with shot size) are also offered for great roll crimping options. See pictures in Additional Images or click on this link.

Shotshell size selection: Use the same size gauge as your hull. Smaller diameter cards also work if your particular size is out of stock. For example, a 20ga overshot card works in a 16-gauge shotshell and so on.

Place an overshot card on top of the shot charge just before crimping to improve overall crimp quality and seal in small shot and/or buffer. Excellent for use with BPI Roll Crimpers.

Our testing lab has proven that poor crimps can alter the performance of an otherwise good load. Overshot cards always produce better, more consistent crimps and this consistency is demonstrated in the standard deviation of loads in our lab. Our ballistic lab recommends overshot cards for better crimps in all loads.

Shotshell size selection:Use the same size gauge as your hull. Smaller diameter cards also work if your particular size is out of stock. For example, a 20ga overshot card works in a 16-gauge shotshell and so on.

Place an overshot card on top of the shot charge just before crimping to improve overall crimp quality and seal in small shot and/or buffer. Excellent for use with BPI Roll Crimpers.

Our testing lab has proven that poor crimps can alter the performance of an otherwise good load. Overshot cards always produce better, more consistent crimps and this consistency is demonstrated in the standard deviation of loads in our lab. Our ballistic lab recommends overshot cards for better crimps in all loads.

Clear Overshot Disks(either plain or printed with shot size) are also offered for great roll crimping options. See pictures in Additional Images or click on this link.

Shotshell size selection:Use the same size gauge as your hull. Smaller diameter cards also work if your particular size is out of stock. For example, a 20ga overshot card works in a 16-gauge shotshell and so on.

Next, the user simply slides the material to be punched into the feed port and begins operating the press as normal.  As filler wads are punched, they will be pushed out the top of the die where they can be collected.  If the operator’s intention is to produce a great many filler wads in one sitting, it is advisable to place a container (a margarine container works well) with a hole cut in the bottom on top of the die, allowing them to stack up inside and avoid making a mess.

Next on the list is my second favorite material, cork.  Once again the press made short work of the 1/4″ thick cork sheet.  The great thing about cork wads is they’re extremely dense and won’t compress, making them ideal for heavy projectiles like slugs, roundballs, or filling large voids in the shot column.

Finally we have plastic blister packaging.  Although not biodegradable, I really like having a transparent option on hand when I need something as an overshot card.  Once again it cuts smoothly, and easily.  The material demonstrated above is  actually plastic from grocery store salad containers if you can believe it, however thicker packaging not only punches well, it crimps even better.

The finished filler wads measure 0.650″, the same internal diameter as a standard 12G shot cup, and an equally excellent size for use as overshot cards.  With a good supply of these on hand, it’s no trouble at all to customize my shot columns by placing them above or below my shot or slugs.  Likewise, if I’ve got a difficult load to crimp like low-volume birdshot or roundball slugs, adding one to the top as an overshot card makes things a snap.