rbernie
Contributing Member
Does the use of an overshot wad raise pressures at all? I am working on some (undocumented) 20ga light loads and may need to resort to an overshot wad to keep the crimp from collapsing. Having never done that before, I'm curious what the potential ramifications might be (altho I must stress that these are really light loads that I have worked up in stages).
I'm also curious if anyone has ever patterned a load with overshot cards to see how the card effects patterning. I would expect the pattern to be blown in places due to the card deccelerating much faster than the shot and obstructing part of the pattern, but that's just a guess.
Lymans is no help WRT the ramifications of using overshot cards - just says that sometimes ya gotta use 'em.
I'm also curious if anyone has ever patterned a load with overshot cards to see how the card effects patterning. I would expect the pattern to be blown in places due to the card deccelerating much faster than the shot and obstructing part of the pattern, but that's just a guess.
Lymans is no help WRT the ramifications of using overshot cards - just says that sometimes ya gotta use 'em.