overshot cards quotation

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.

If I remember correctly, I believe Ned stated he never used an overshot card as he didn"t want anything over the shot column. The Polywad Spreader system is based on an overshot wad by the way.

If you can make up cushion wads from the styrofoam trays used to sell packaged meat in the grocery stores- you will need a punch, you can use a few of these as a cushoin wad, instead of the thick fiber wads we use, and those light wads seems to stop almost as soon as they leave the barrel. I have seen several shotgunners using them, but they still use the overshot card to keep the shot in. The styrofoam might work in keeping a round ball in place, however, if you want to try that. These styrofoam wads will weigh less than the card wads, altho the difference will be fairly slight.

The difference in weight between styrofoam wads and fiber cushion wads is substantion. Add to that that many shooters soak the cushion wads in lubricant before shooting and you have a heavy piece of wadding that puts the hole in the middle of the shot column after it leaves the barrel, as it continues to travel at a speed greater than the fast slowing column of shot. Rather than put lube into the cushion wad( you won"t be able to do that with the sytrofoam ones) use your finger to put a bead of lube around the muzzle before driving the cushion wad down the barrel, so the lube is between the overpowder wad, and the cushion wad. The thick cushion wad will wipe the lube from the muzzle down the barrel to the overcard wad, cleaning any heavy debris from the barrel, and lubricating the barrel as the cushion wad is driven home. Then put in the shot, and overshot card. I saw one man who had a short starter desiged to drive the overpowder card and cushion wads down the muzzle just far enough that he could put the shot and over shot card in the barrel and then drive the entire package down the barrel with just one pass of his ramrod. If you are in a timed match, this is the way to do it. If the dove are flying in fast, this is also the way to go. The stem on that short starter was not more than 3 inches long, and probably only 2 inches. I mention it because I thought it was a smart solution to the problem of getting a shotgun or fowler reloaded quickly. The styrofoam wadding may not be traditional, but then its not easy to come by Hornet"s nest material, either.

Another problem is how to seal the end. Brass doesn"t crimp like plastic. I bought 10 gauge overshot cards. The shells weren"t building up enough pressure, so I tried gluing them in with Elmer"s glue (saw a youtube video on this). Well, it tended to leak past the overshot card and glue the shot together. So then I tried pouring sodium silicate over the overshot cards. Because it has water in it, it tended to leak past the overshot card and build up next to the wad. Third attempt was using parafin. I haven"t tested it yet.