overshot card quotation

Our overshot cards range in stock thickness from .030" to .040", depending upon the gauge you select. Overshot cards are essential for roll crimps and they add the finishing touch under fold crimps to improve crimp quality and seal in small pellets and/or buffering materials. Our ballistic lab recommends overshot cards in every load.

So bought a 5/8 punch and punched some cardboard that I had saved up. When I placed it in the empty hull it looked way to small. I have never rolled my own shotgun shells this is my first time. Will it look different after I roll crimp it will it fit? Or do I have the wrong size punch?

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 are using 1/8" thick or thicker card wads as a filler for loads under 1 ounce, I suggest you simply insert the wads into the shot cup just before you ram it into the shell. The rammer will seat the card wads perfectly into the bottom of the shot cup and will then drop the shot on top. It is easier and quicker. Plus, these thicker, heavier wads are not meant to be placed on top of the shot. They have always been traditionally used as a filler under the shot, even in a 28 ga load.

Only the very thin and light overshot card wads have ever been traditionally used on top of the shot to close the shell mouth of a roll crimped shell. Roll crimped shells open differently than a folded crimp. The shot collapses the thin over shot wad outwards from the center and pushes it out of the way as everything exits the barrel.