@Marty Henry will correct me if Im offtrack here
same VOLUME of black powder and shot..wad material is adjusted to make that a snug fit inside the case
more powder =faster and more spread....
less powder=tighter pattern and less speed
for possums up tree and general just going bang and snotting stuff yo ucan get away with all sorts of things
dont over think it..as long as you dont over charge it it will work.
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