Daryl
The ball is a .690 from track of the wolf. I doin't think that they are that heavy as my .715's are only in the 545 to 550 range. I would have though that the hight was right or a little hihg as the ball when presed in was at or near the top of the shell. I think what happeded is I used to much pressure to close the crimp and pushed the springie part of the wad down and them folded the crimp down to far. I hadn't had plans to shoot it I will try one more and if I can find a hight that works will shoot them.
Tom N.
P.S. For all you out their that would try this stay with a 12 or 20 gauge as their isn't much info out their for slug loads for a 10 gauge at lest I haven't been able to find them.