I'll take it you shoot a 45 L Colt cartridge. Being a straight wall case hardly no crimping should you expect do on a light target round. The crimp for the most part was set when your brass was resized earlier. Being your bullet has no cannelure. So long as the cartridges mouth opening. It's (rim) looks tight up against the side of your bullet your good to go Sir..
"Do not follow where the path leads, rather go where there is no path and leave a trail for others to follow."