Bushings rarely throw exact. Most of the time it's not a problem get close on a load you like good enough.
Problem load like my very light 16 g 3/4 # 8 shot in Cheddite hulls crimps give me a fit. Was curing it with a Cherrio or thin over shot wad which slowed down loading and aggravated me.
Weighed my 3/4 oz bushing drops and found them much closer to 5/8 than 3/4. Dribbling shot in the hull to true 3/4 the crimps come out fine no fillers. Chucked the bushing in my lathe and opened it up to true 3/4 with my shot. Problem solved.
Short 10s I have to use a fiber filler wad anyway. Buy 1/2 inch wads split to fit. Loading if I have crimp trouble I just split them a little thicker. You do get a "eye" for it. If they are not perfect they still shoot fine.
William
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