I have been casting the Lyman wasp waist slug and shot a bunch the other day. I had fliers at 100 yd's even though they shot good at 50 yd's. I use the WW red wad and 4756. I seen the wad petals were cut off and the bore had lead in it. It looks like the powder is too fast, expanding the slug hard enough to cut off the petals and causing the leading. I use pure lead. I was getting 3" groups at 50 offhand. It is a Remington 870 12 ga, with a Hastings rifled barrel.
I am going to try Blue dot to see if it stops wad damage.
Any suggestions?
I don't hunt with it, just have fun shooting at targets.