Fibers were from Precession Reloading. Nitro card then fiber split to make correct stack height. Over shot & roll crimped. Add cutting down 2 7/8 to 2 1/2 its a lot of work . The stacked fiber worked well its not easy like powder, shot cup, shot crimp & go.
I usually shoot 16 in a very light Parker Hammer gun. High volume, 100-125 round of clays. For me its best use low recoil shells & keep the loading simple. I use the 3/4 oz data most, load some 7/8/ for a Parker Trojan using Hodgdons loads too.
Boats
