45 Colt Wad Cutter
I use a 225 grain and a 255 grain Wadcutter style bullet, sized 0.452". Yes, a true wadcutter. I took a S&W 29-3 pulled the barrel and replaced it with a 0.451" bore, barrel, stainless steel. I pulled the cylinder and bored it out to "tight" 45 Colt dimensions. Shot PPC with it for years. The 38 Special guys were really surprised by its accuracy.